diff --git a/lib/Slic3r/GUI.pm b/lib/Slic3r/GUI.pm
index 10375a9dc..89a8e7974 100644
--- a/lib/Slic3r/GUI.pm
+++ b/lib/Slic3r/GUI.pm
@@ -86,8 +86,9 @@ sub OnInit {
     Slic3r::GUI::set_wxapp($self);
 
     $self->{app_config} = Slic3r::GUI::AppConfig->new;
-    $self->{preset_bundle} = Slic3r::GUI::PresetBundle->new;
     Slic3r::GUI::set_app_config($self->{app_config});
+    $self->{preset_bundle} = Slic3r::GUI::PresetBundle->new;
+    Slic3r::GUI::set_preset_bundle($self->{preset_bundle});
 
     # just checking for existence of Slic3r::data_dir is not enough: it may be an empty directory
     # supplied as argument to --datadir; in that case we should still run the wizard
@@ -104,7 +105,11 @@ sub OnInit {
 
     $self->{preset_updater} = Slic3r::PresetUpdater->new($VERSION_ONLINE_EVENT);
     Slic3r::GUI::set_preset_updater($self->{preset_updater});
-    eval { $self->{preset_updater}->config_update(); };
+    eval {
+        if (! $self->{preset_updater}->config_update()) {
+            exit 0;
+        }
+    };
     if ($@) {
         warn $@ . "\n";
         fatal_error(undef, $@);
@@ -120,8 +125,6 @@ sub OnInit {
         show_error(undef, $@);
     }
 
-    Slic3r::GUI::set_preset_bundle($self->{preset_bundle});
-    
     # application frame
     print STDERR "Creating main frame...\n";
     Wx::Image::FindHandlerType(wxBITMAP_TYPE_PNG) || Wx::Image::AddHandler(Wx::PNGHandler->new);
@@ -144,8 +147,10 @@ sub OnInit {
     # On OSX the UI was not initialized correctly if the wizard was called
     # before the UI was up and running.
     $self->CallAfter(sub {
-        Slic3r::GUI::config_wizard_startup($app_conf_exists);
-        $self->{preset_updater}->slic3r_update_notify();
+        if (! Slic3r::GUI::config_wizard_startup($app_conf_exists)) {
+            # Only notify if there was not wizard so as not to bother too much ...
+            $self->{preset_updater}->slic3r_update_notify();
+        }
         $self->{preset_updater}->sync($self->{preset_bundle});
     });
 
diff --git a/resources/icons/Slic3r_192px_grayscale.png b/resources/icons/Slic3r_192px_grayscale.png
new file mode 100644
index 000000000..910f94187
Binary files /dev/null and b/resources/icons/Slic3r_192px_grayscale.png differ
diff --git a/xs/CMakeLists.txt b/xs/CMakeLists.txt
index 7798333fb..2f03daaa7 100644
--- a/xs/CMakeLists.txt
+++ b/xs/CMakeLists.txt
@@ -220,6 +220,8 @@ add_library(libslic3r_gui STATIC
     ${LIBDIR}/slic3r/Utils/ASCIIFolding.hpp
     ${LIBDIR}/slic3r/GUI/ConfigWizard.cpp
     ${LIBDIR}/slic3r/GUI/ConfigWizard.hpp
+    ${LIBDIR}/slic3r/GUI/UpdateDialogs.cpp
+    ${LIBDIR}/slic3r/GUI/UpdateDialogs.hpp
     ${LIBDIR}/slic3r/Utils/Http.cpp
     ${LIBDIR}/slic3r/Utils/Http.hpp
     ${LIBDIR}/slic3r/Utils/OctoPrint.cpp
diff --git a/xs/src/slic3r/GUI/ConfigWizard.cpp b/xs/src/slic3r/GUI/ConfigWizard.cpp
index a1ee5a748..84f401ba1 100644
--- a/xs/src/slic3r/GUI/ConfigWizard.cpp
+++ b/xs/src/slic3r/GUI/ConfigWizard.cpp
@@ -207,7 +207,7 @@ PageWelcome::PageWelcome(ConfigWizard *parent) :
 	others_buttons(new wxPanel(parent)),
 	cbox_reset(nullptr)
 {
-	if (wizard_p()->flag_startup && wizard_p()->flag_empty_datadir) {
+	if (wizard_p()->run_reason == ConfigWizard::RR_DATA_EMPTY) {
 		wxString::Format(_(L("Run %s")), ConfigWizard::name());
 		append_text(wxString::Format(
 			_(L("Hello, welcome to Slic3r Prusa Edition! This %s helps you with the initial configuration; just a few settings and you will be ready to print.")),
@@ -709,7 +709,7 @@ void ConfigWizard::priv::on_custom_setup()
 	set_page(page_firmware);
 }
 
-void ConfigWizard::priv::apply_config(AppConfig *app_config, PresetBundle *preset_bundle, PresetUpdater *updater)
+void ConfigWizard::priv::apply_config(AppConfig *app_config, PresetBundle *preset_bundle, const PresetUpdater *updater)
 {
 	const bool is_custom_setup = page_welcome->page_next() == page_firmware;
 
@@ -730,8 +730,14 @@ void ConfigWizard::priv::apply_config(AppConfig *app_config, PresetBundle *prese
 			install_bundles.emplace_back(vendor_rsrc.second);
 		}
 
-		// If the datadir was empty don't take a snapshot (it would just be an empty snapshot)
-		const bool snapshot = !flag_empty_datadir || page_welcome->reset_user_profile();
+		// Decide whether to create snapshot based on run_reason and the reset profile checkbox
+		bool snapshot = true;
+		switch (run_reason) {
+			case ConfigWizard::RR_DATA_EMPTY:    snapshot = false; break;
+			case ConfigWizard::RR_DATA_LEGACY:   snapshot = true; break;
+			case ConfigWizard::RR_DATA_INCOMPAT: snapshot = false; break;      // In this case snapshot is done by PresetUpdater with the appropriate reason
+			case ConfigWizard::RR_USER:          snapshot = page_welcome->reset_user_profile(); break;
+		}
 		if (install_bundles.size() > 0) {
 			// Install bundles from resources.
 			updater->install_bundles_rsrc(std::move(install_bundles), snapshot);
@@ -744,8 +750,7 @@ void ConfigWizard::priv::apply_config(AppConfig *app_config, PresetBundle *prese
 		app_config->set_vendors(appconfig_vendors);
 		app_config->set("version_check", page_update->version_check ? "1" : "0");
 		app_config->set("preset_update", page_update->preset_update ? "1" : "0");
-		if (flag_startup)
-			app_config->reset_selections();
+		app_config->reset_selections();
 		// ^ TODO: replace with appropriate printer selection
 		preset_bundle->load_presets(*app_config);
 	} else {
@@ -760,12 +765,11 @@ void ConfigWizard::priv::apply_config(AppConfig *app_config, PresetBundle *prese
 
 // Public
 
-ConfigWizard::ConfigWizard(wxWindow *parent, bool startup, bool empty_datadir) :
+ConfigWizard::ConfigWizard(wxWindow *parent, RunReason reason) :
 	wxDialog(parent, wxID_ANY, name(), wxDefaultPosition, wxDefaultSize, wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER),
 	p(new priv(this))
 {
-	p->flag_startup = startup;
-	p->flag_empty_datadir = empty_datadir;
+	p->run_reason = reason;
 
 	p->load_vendors();
 	p->custom_config.reset(DynamicPrintConfig::new_from_defaults_keys({
@@ -822,10 +826,13 @@ ConfigWizard::ConfigWizard(wxWindow *parent, bool startup, bool empty_datadir) :
 
 ConfigWizard::~ConfigWizard() {}
 
-void ConfigWizard::run(PresetBundle *preset_bundle, PresetUpdater *updater)
+bool ConfigWizard::run(PresetBundle *preset_bundle, const PresetUpdater *updater)
 {
 	if (ShowModal() == wxID_OK) {
 		p->apply_config(GUI::get_app_config(), preset_bundle, updater);
+		return true;
+	} else {
+		return false;
 	}
 }
 
diff --git a/xs/src/slic3r/GUI/ConfigWizard.hpp b/xs/src/slic3r/GUI/ConfigWizard.hpp
index eeb64c57f..73fce7cd2 100644
--- a/xs/src/slic3r/GUI/ConfigWizard.hpp
+++ b/xs/src/slic3r/GUI/ConfigWizard.hpp
@@ -16,14 +16,23 @@ namespace GUI {
 class ConfigWizard: public wxDialog
 {
 public:
-	ConfigWizard(wxWindow *parent, bool startup, bool empty_datadir);
+	// Why is the Wizard run
+	enum RunReason {
+		RR_DATA_EMPTY,                  // No or empty datadir
+		RR_DATA_LEGACY,                 // Pre-updating datadir
+		RR_DATA_INCOMPAT,               // Incompatible datadir - Slic3r downgrade situation
+		RR_USER,                        // User requested the Wizard from the menus
+	};
+
+	ConfigWizard(wxWindow *parent, RunReason run_reason);
 	ConfigWizard(ConfigWizard &&) = delete;
 	ConfigWizard(const ConfigWizard &) = delete;
 	ConfigWizard &operator=(ConfigWizard &&) = delete;
 	ConfigWizard &operator=(const ConfigWizard &) = delete;
 	~ConfigWizard();
 
-	void run(PresetBundle *preset_bundle, PresetUpdater *updater);
+	// Run the Wizard. Return whether it was completed.
+	bool run(PresetBundle *preset_bundle, const PresetUpdater *updater);
 
 	static const wxString& name();
 private:
diff --git a/xs/src/slic3r/GUI/ConfigWizard_private.hpp b/xs/src/slic3r/GUI/ConfigWizard_private.hpp
index cdab2eb3c..474394bc3 100644
--- a/xs/src/slic3r/GUI/ConfigWizard_private.hpp
+++ b/xs/src/slic3r/GUI/ConfigWizard_private.hpp
@@ -190,8 +190,7 @@ private:
 struct ConfigWizard::priv
 {
 	ConfigWizard *q;
-	bool flag_startup;
-	bool flag_empty_datadir;
+	ConfigWizard::RunReason run_reason;
 	AppConfig appconfig_vendors;
 	std::unordered_map<std::string, VendorProfile> vendors;
 	std::unordered_map<std::string, std::string> vendors_rsrc;
@@ -228,7 +227,7 @@ struct ConfigWizard::priv
 	void on_other_vendors();
 	void on_custom_setup();
 
-	void apply_config(AppConfig *app_config, PresetBundle *preset_bundle, PresetUpdater *updater);
+	void apply_config(AppConfig *app_config, PresetBundle *preset_bundle, const PresetUpdater *updater);
 };
 
 
diff --git a/xs/src/slic3r/GUI/GUI.cpp b/xs/src/slic3r/GUI/GUI.cpp
index 88c3f421b..bd74e118e 100644
--- a/xs/src/slic3r/GUI/GUI.cpp
+++ b/xs/src/slic3r/GUI/GUI.cpp
@@ -390,7 +390,7 @@ void add_config_menu(wxMenuBar *menu, int event_preferences_changed, int event_l
 	local_menu->Bind(wxEVT_MENU, [config_id_base, event_language_change, event_preferences_changed](wxEvent &event){
 		switch (event.GetId() - config_id_base) {
 		case ConfigMenuWizard:
-            config_wizard(false, false);
+            config_wizard(ConfigWizard::RR_USER);
             break;
 		case ConfigMenuTakeSnapshot:
 			// Take a configuration snapshot.
@@ -469,10 +469,11 @@ bool check_unsaved_changes()
 	return dialog->ShowModal() == wxID_YES;
 }
 
-void config_wizard_startup(bool app_config_exists)
+bool config_wizard_startup(bool app_config_exists)
 {
 	if (! app_config_exists || g_PresetBundle->has_defauls_only()) {
-		config_wizard(true, true);
+		config_wizard(ConfigWizard::RR_DATA_EMPTY);
+		return true;
 	} else if (g_AppConfig->legacy_datadir()) {
 		// Looks like user has legacy pre-vendorbundle data directory,
 		// explain what this is and run the wizard
@@ -496,20 +497,19 @@ void config_wizard_startup(bool app_config_exists)
 		dlg.SetExtendedMessage(ext_msg);
 		const auto res = dlg.ShowModal();
 
-		config_wizard(true, false);
+		config_wizard(ConfigWizard::RR_DATA_LEGACY);
+		return true;
 	}
+	return false;
 }
 
-void config_wizard(bool startup, bool empty_datadir)
+void config_wizard(int reason)
 {
-	if (g_wxMainFrame == nullptr)
-		throw std::runtime_error("Main frame not set");
-
     // Exit wizard if there are unsaved changes and the user cancels the action.
     if (! check_unsaved_changes())
     	return;
 
-	ConfigWizard wizard(g_wxMainFrame, startup, empty_datadir);
+	ConfigWizard wizard(nullptr, static_cast<ConfigWizard::RunReason>(reason));
 	wizard.run(g_PresetBundle, g_PresetUpdater);
 
     // Load the currently selected preset into the GUI, update the preset selection box.
@@ -686,6 +686,11 @@ wxApp* get_app(){
 	return g_wxApp;
 }
 
+PresetBundle* get_preset_bundle()
+{
+	return g_PresetBundle;
+}
+
 const wxColour& get_modified_label_clr() {
 	return g_color_label_modified;
 }
diff --git a/xs/src/slic3r/GUI/GUI.hpp b/xs/src/slic3r/GUI/GUI.hpp
index 92a6e6ebb..a8bbdccc7 100644
--- a/xs/src/slic3r/GUI/GUI.hpp
+++ b/xs/src/slic3r/GUI/GUI.hpp
@@ -82,6 +82,7 @@ void set_preset_updater(PresetUpdater *updater);
 
 AppConfig*	get_app_config();
 wxApp*		get_app();
+PresetBundle* get_preset_bundle();
 
 const wxColour& get_modified_label_clr();
 const wxColour& get_sys_label_clr();
@@ -93,11 +94,13 @@ extern void add_config_menu(wxMenuBar *menu, int event_preferences_changed, int
 // to notify the user whether he is aware that some preset changes will be lost.
 extern bool check_unsaved_changes();
 
-// Checks if configuration wizard needs to run, calls config_wizard if so
-extern void config_wizard_startup(bool app_config_exists);
+// Checks if configuration wizard needs to run, calls config_wizard if so.
+// Returns whether the Wizard ran.
+extern bool config_wizard_startup(bool app_config_exists);
 
 // Opens the configuration wizard, returns true if wizard is finished & accepted.
-extern void config_wizard(bool startup, bool empty_datadir);
+// The run_reason argument is actually ConfigWizard::RunReason, but int is used here because of Perl.
+extern void config_wizard(int run_reason);
 
 // Create "Preferences" dialog after selecting menu "Preferences" in Perl part
 extern void open_preferences_dialog(int event_preferences);
diff --git a/xs/src/slic3r/GUI/UpdateDialogs.cpp b/xs/src/slic3r/GUI/UpdateDialogs.cpp
new file mode 100644
index 000000000..076554e23
--- /dev/null
+++ b/xs/src/slic3r/GUI/UpdateDialogs.cpp
@@ -0,0 +1,203 @@
+#include "UpdateDialogs.hpp"
+
+#include <wx/settings.h>
+#include <wx/sizer.h>
+#include <wx/event.h>
+#include <wx/stattext.h>
+#include <wx/button.h>
+#include <wx/hyperlink.h>
+#include <wx/statbmp.h>
+#include <wx/checkbox.h>
+
+#include "libslic3r/libslic3r.h"
+#include "libslic3r/Utils.hpp"
+#include "GUI.hpp"
+
+namespace Slic3r {
+namespace GUI {
+
+
+enum {
+	CONTENT_WIDTH = 400,
+	BORDER = 30,
+	VERT_SPACING = 15,
+	HORIZ_SPACING = 5,
+};
+
+
+MsgDialog::MsgDialog(const wxString &title, const wxString &headline, wxWindowID button_id) :
+	MsgDialog(title, headline, wxBitmap(from_u8(Slic3r::var("Slic3r_192px.png")), wxBITMAP_TYPE_PNG), button_id)
+{}
+
+MsgDialog::MsgDialog(const wxString &title, const wxString &headline, wxBitmap bitmap, wxWindowID button_id) :
+	wxDialog(nullptr, wxID_ANY, title),
+	boldfont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT)),
+	content_sizer(new wxBoxSizer(wxVERTICAL)),
+	btn_sizer(new wxBoxSizer(wxHORIZONTAL))
+{
+	boldfont.SetWeight(wxFONTWEIGHT_BOLD);
+
+	auto *topsizer = new wxBoxSizer(wxHORIZONTAL);
+	auto *rightsizer = new wxBoxSizer(wxVERTICAL);
+
+	auto *headtext = new wxStaticText(this, wxID_ANY, headline);
+	headtext->SetFont(boldfont);
+	headtext->Wrap(CONTENT_WIDTH);
+	rightsizer->Add(headtext);
+	rightsizer->AddSpacer(VERT_SPACING);
+
+	rightsizer->Add(content_sizer);
+
+	if (button_id != wxID_NONE) {
+		auto *button = new wxButton(this, button_id);
+		button->SetFocus();
+		btn_sizer->Add(button);
+	}
+
+	rightsizer->Add(btn_sizer, 0, wxALIGN_CENTRE_HORIZONTAL);
+
+	auto *logo = new wxStaticBitmap(this, wxID_ANY, std::move(bitmap));
+
+	topsizer->Add(logo, 0, wxALL, BORDER);
+	topsizer->Add(rightsizer, 0, wxALL, BORDER);
+
+	SetSizerAndFit(topsizer);
+}
+
+MsgDialog::~MsgDialog() {}
+
+
+// MsgUpdateSlic3r
+
+MsgUpdateSlic3r::MsgUpdateSlic3r(const Semver &ver_current, const Semver &ver_online) :
+	MsgDialog(_(L("Update available")), _(L("New version of Slic3r PE is available"))),
+	ver_current(ver_current),
+	ver_online(ver_online)
+{
+	const auto url = wxString::Format("https://github.com/prusa3d/Slic3r/releases/tag/version_%s", ver_online.to_string());
+	auto *link = new wxHyperlinkCtrl(this, wxID_ANY, url, url);
+
+	auto *text = new wxStaticText(this, wxID_ANY, _(L("To download, follow the link below.")));
+	const auto link_width = link->GetSize().GetWidth();
+	text->Wrap(CONTENT_WIDTH > link_width ? CONTENT_WIDTH : link_width);
+	content_sizer->Add(text);
+	content_sizer->AddSpacer(VERT_SPACING);
+
+	auto *versions = new wxFlexGridSizer(2, 0, VERT_SPACING);
+	versions->Add(new wxStaticText(this, wxID_ANY, _(L("Current version:"))));
+	versions->Add(new wxStaticText(this, wxID_ANY, ver_current.to_string()));
+	versions->Add(new wxStaticText(this, wxID_ANY, _(L("New version:"))));
+	versions->Add(new wxStaticText(this, wxID_ANY, ver_online.to_string()));
+	content_sizer->Add(versions);
+	content_sizer->AddSpacer(VERT_SPACING);
+
+	content_sizer->Add(link);
+	content_sizer->AddSpacer(2*VERT_SPACING);
+
+	cbox = new wxCheckBox(this, wxID_ANY, _(L("Don't notify about new releases any more")));
+	content_sizer->Add(cbox);
+	content_sizer->AddSpacer(VERT_SPACING);
+
+	Fit();
+}
+
+MsgUpdateSlic3r::~MsgUpdateSlic3r() {}
+
+bool MsgUpdateSlic3r::disable_version_check() const
+{
+	return cbox->GetValue();
+}
+
+
+// MsgUpdateConfig
+
+MsgUpdateConfig::MsgUpdateConfig(const std::unordered_map<std::string, std::string> &updates) :
+	MsgDialog(_(L("Configuration update")), _(L("Configuration update is available")), wxID_NONE)
+{
+	auto *text = new wxStaticText(this, wxID_ANY, _(L(
+		"Would you like to install it?\n\n"
+		"Note that a full configuration snapshot will be created first. It can then be restored at any time "
+		"should there be a problem with the new version.\n\n"
+		"Updated configuration bundles:"
+	)));
+	text->Wrap(CONTENT_WIDTH);
+	content_sizer->Add(text);
+	content_sizer->AddSpacer(VERT_SPACING);
+
+	auto *versions = new wxFlexGridSizer(2, 0, VERT_SPACING);
+	for (const auto &update : updates) {
+		auto *text_vendor = new wxStaticText(this, wxID_ANY, update.first);
+		text_vendor->SetFont(boldfont);
+		versions->Add(text_vendor);
+		versions->Add(new wxStaticText(this, wxID_ANY, update.second));
+	}
+
+	content_sizer->Add(versions);
+	content_sizer->AddSpacer(2*VERT_SPACING);
+
+	auto *btn_cancel = new wxButton(this, wxID_CANCEL);
+	btn_sizer->Add(btn_cancel);
+	btn_sizer->AddSpacer(HORIZ_SPACING);
+	auto *btn_ok = new wxButton(this, wxID_YES);
+	btn_sizer->Add(btn_ok);
+	btn_ok->SetFocus();
+
+	Fit();
+}
+
+MsgUpdateConfig::~MsgUpdateConfig() {}
+
+
+// MsgDataIncompatible
+
+MsgDataIncompatible::MsgDataIncompatible(const std::unordered_map<std::string, std::string> &incompats) :
+	MsgDialog(_(L("Slic3r incompatibility")), _(L("Slic3r configuration is incompatible")), wxBitmap(from_u8(Slic3r::var("Slic3r_192px_grayscale.png"))), wxID_NONE)
+{
+	auto *text = new wxStaticText(this, wxID_ANY, _(L(
+		"This version of Slic3r PE is not compatible with currently installed configuration bundles.\n"
+		"This probably happened as a result of running an older Slic3r PE after using a newer one.\n\n"
+		"TODO: more instrs\n"
+	)));
+	text->Wrap(CONTENT_WIDTH);
+	content_sizer->Add(text);
+
+	auto *text2 = new wxStaticText(this, wxID_ANY, wxString::Format(_(L("This Slic3r PE version: %s")), SLIC3R_VERSION));
+	text2->Wrap(CONTENT_WIDTH);
+	content_sizer->Add(text2);
+	content_sizer->AddSpacer(VERT_SPACING);
+
+	auto *text3 = new wxStaticText(this, wxID_ANY, _(L("Incompatible bundles:")));
+	text3->Wrap(CONTENT_WIDTH);
+	content_sizer->Add(text3);
+	content_sizer->AddSpacer(VERT_SPACING);
+
+	auto *versions = new wxFlexGridSizer(2, 0, VERT_SPACING);
+	for (const auto &incompat : incompats) {
+		auto *text_vendor = new wxStaticText(this, wxID_ANY, incompat.first);
+		text_vendor->SetFont(boldfont);
+		versions->Add(text_vendor);
+		versions->Add(new wxStaticText(this, wxID_ANY, incompat.second));
+	}
+
+	content_sizer->Add(versions);
+	content_sizer->AddSpacer(2*VERT_SPACING);
+
+	auto *btn_exit = new wxButton(this, wxID_EXIT, _(L("Exit Slic3r")));
+	btn_sizer->Add(btn_exit);
+	btn_sizer->AddSpacer(HORIZ_SPACING);
+	auto *btn_reconf = new wxButton(this, wxID_REPLACE, _(L("Re-configure")));
+	btn_sizer->Add(btn_reconf);
+	btn_exit->SetFocus();
+
+	auto exiter = [this](const wxCommandEvent& evt) { this->EndModal(evt.GetId()); };
+	btn_exit->Bind(wxEVT_BUTTON, exiter);
+	btn_reconf->Bind(wxEVT_BUTTON, exiter);
+
+	Fit();
+}
+
+MsgDataIncompatible::~MsgDataIncompatible() {}
+
+
+}
+}
diff --git a/xs/src/slic3r/GUI/UpdateDialogs.hpp b/xs/src/slic3r/GUI/UpdateDialogs.hpp
new file mode 100644
index 000000000..ae949b8dd
--- /dev/null
+++ b/xs/src/slic3r/GUI/UpdateDialogs.hpp
@@ -0,0 +1,92 @@
+#ifndef slic3r_UpdateDialogs_hpp_
+#define slic3r_UpdateDialogs_hpp_
+
+#include <string>
+#include <unordered_map>
+
+#include <wx/dialog.h>
+#include <wx/font.h>
+#include <wx/bitmap.h>
+
+#include "slic3r/Utils/Semver.hpp"
+
+class wxBoxSizer;
+class wxCheckBox;
+
+namespace Slic3r {
+
+namespace GUI {
+
+
+// A message / query dialog with a bitmap on the left and any content on the right
+// with buttons underneath.
+struct MsgDialog : wxDialog
+{
+	MsgDialog(MsgDialog &&) = delete;
+	MsgDialog(const MsgDialog &) = delete;
+	MsgDialog &operator=(MsgDialog &&) = delete;
+	MsgDialog &operator=(const MsgDialog &) = delete;
+	virtual ~MsgDialog();
+
+protected:
+	// button_id is an id of a button that can be added by default, use wxID_NONE to disable
+	MsgDialog(const wxString &title, const wxString &headline, wxWindowID button_id = wxID_OK);
+	MsgDialog(const wxString &title, const wxString &headline, wxBitmap bitmap, wxWindowID button_id = wxID_OK);
+
+	wxFont boldfont;
+	wxBoxSizer *content_sizer;
+	wxBoxSizer *btn_sizer;
+};
+
+// A confirmation dialog listing configuration updates
+class MsgUpdateSlic3r : public MsgDialog
+{
+public:
+	MsgUpdateSlic3r(const Semver &ver_current, const Semver &ver_online);
+	MsgUpdateSlic3r(MsgUpdateSlic3r &&) = delete;
+	MsgUpdateSlic3r(const MsgUpdateSlic3r &) = delete;
+	MsgUpdateSlic3r &operator=(MsgUpdateSlic3r &&) = delete;
+	MsgUpdateSlic3r &operator=(const MsgUpdateSlic3r &) = delete;
+	virtual ~MsgUpdateSlic3r();
+
+	// Tells whether the user checked the "don't bother me again" checkbox
+	bool disable_version_check() const;
+
+private:
+	const Semver &ver_current;
+	const Semver &ver_online;
+	wxCheckBox *cbox;
+};
+
+
+// Confirmation dialog informing about configuration update. Lists updated bundles & their versions.
+class MsgUpdateConfig : public MsgDialog
+{
+public:
+	// updates is a map of "vendor name" -> "version (comment)"
+	MsgUpdateConfig(const std::unordered_map<std::string, std::string> &updates);
+	MsgUpdateConfig(MsgUpdateConfig &&) = delete;
+	MsgUpdateConfig(const MsgUpdateConfig &) = delete;
+	MsgUpdateConfig &operator=(MsgUpdateConfig &&) = delete;
+	MsgUpdateConfig &operator=(const MsgUpdateConfig &) = delete;
+	~MsgUpdateConfig();
+};
+
+// Informs about currently installed bundles not being compatible with the running Slic3r. Asks about action.
+class MsgDataIncompatible : public MsgDialog
+{
+public:
+	// incompats is a map of "vendor name" -> "version restrictions"
+	MsgDataIncompatible(const std::unordered_map<std::string, std::string> &incompats);
+	MsgDataIncompatible(MsgDataIncompatible &&) = delete;
+	MsgDataIncompatible(const MsgDataIncompatible &) = delete;
+	MsgDataIncompatible &operator=(MsgDataIncompatible &&) = delete;
+	MsgDataIncompatible &operator=(const MsgDataIncompatible &) = delete;
+	~MsgDataIncompatible();
+};
+
+
+}
+}
+
+#endif
diff --git a/xs/src/slic3r/Utils/PresetUpdater.cpp b/xs/src/slic3r/Utils/PresetUpdater.cpp
index 8dd974537..ec152df63 100644
--- a/xs/src/slic3r/Utils/PresetUpdater.cpp
+++ b/xs/src/slic3r/Utils/PresetUpdater.cpp
@@ -2,7 +2,7 @@
 
 #include <algorithm>
 #include <thread>
-#include <stack>
+#include <unordered_map>
 #include <ostream>
 #include <stdexcept>
 #include <boost/format.hpp>
@@ -14,18 +14,13 @@
 #include <wx/app.h>
 #include <wx/event.h>
 #include <wx/msgdlg.h>
-#include <wx/dialog.h>
-#include <wx/sizer.h>
-#include <wx/stattext.h>
-#include <wx/button.h>
-#include <wx/hyperlink.h>
-#include <wx/statbmp.h>
-#include <wx/checkbox.h>
 
 #include "libslic3r/libslic3r.h"
 #include "libslic3r/Utils.hpp"
 #include "slic3r/GUI/GUI.hpp"
 #include "slic3r/GUI/PresetBundle.hpp"
+#include "slic3r/GUI/UpdateDialogs.hpp"
+#include "slic3r/GUI/ConfigWizard.hpp"
 #include "slic3r/Utils/Http.hpp"
 #include "slic3r/Config/Version.hpp"
 #include "slic3r/Config/Snapshot.hpp"
@@ -48,90 +43,49 @@ static const char *INDEX_FILENAME = "index.idx";
 static const char *TMP_EXTENSION = ".download";
 
 
-// A confirmation dialog listing configuration updates
-struct UpdateNotification : wxDialog
-{
-	// If this dialog gets any more complex, it should probably be factored out...
-
-	enum {
-		CONTENT_WIDTH = 400,
-		BORDER = 30,
-		SPACING = 15,
-	};
-
-	wxCheckBox *cbox;
-
-	UpdateNotification(const Semver &ver_current, const Semver &ver_online) : wxDialog(nullptr, wxID_ANY, _(L("Update available")))
-	{
-		auto *topsizer = new wxBoxSizer(wxHORIZONTAL);
-		auto *sizer = new wxBoxSizer(wxVERTICAL);
-
-		const auto url = wxString::Format("https://github.com/prusa3d/Slic3r/releases/tag/version_%s", ver_online.to_string());
-		auto *link = new wxHyperlinkCtrl(this, wxID_ANY, url, url);
-
-		auto *text = new wxStaticText(this, wxID_ANY,
-			_(L("New version of Slic3r PE is available. To download, follow the link below.")));
-		const auto link_width = link->GetSize().GetWidth();
-		text->Wrap(CONTENT_WIDTH > link_width ? CONTENT_WIDTH : link_width);
-		sizer->Add(text);
-		sizer->AddSpacer(SPACING);
-
-		auto *versions = new wxFlexGridSizer(2, 0, SPACING);
-		versions->Add(new wxStaticText(this, wxID_ANY, _(L("Current version:"))));
-		versions->Add(new wxStaticText(this, wxID_ANY, ver_current.to_string()));
-		versions->Add(new wxStaticText(this, wxID_ANY, _(L("New version:"))));
-		versions->Add(new wxStaticText(this, wxID_ANY, ver_online.to_string()));
-		sizer->Add(versions);
-		sizer->AddSpacer(SPACING);
-
-		sizer->Add(link);
-		sizer->AddSpacer(2*SPACING);
-
-		cbox = new wxCheckBox(this, wxID_ANY, _(L("Don't notify about new releases any more")));
-		sizer->Add(cbox);
-		sizer->AddSpacer(SPACING);
-
-		auto *ok = new wxButton(this, wxID_OK);
-		ok->SetFocus();
-		sizer->Add(ok, 0, wxALIGN_CENTRE_HORIZONTAL);
-
-		auto *logo = new wxStaticBitmap(this, wxID_ANY, wxBitmap(GUI::from_u8(Slic3r::var("Slic3r_192px.png")), wxBITMAP_TYPE_PNG));
-
-		topsizer->Add(logo, 0, wxALL, BORDER);
-		topsizer->Add(sizer, 0, wxALL, BORDER);
-
-		SetSizerAndFit(topsizer);
-	}
-
-	bool disable_version_check() const { return cbox->GetValue(); }
-};
-
 struct Update
 {
 	fs::path source;
 	fs::path target;
 	Version version;
 
-	Update(fs::path &&source, const fs::path &target, const Version &version) :
-		source(source),
+	Update(fs::path &&source, fs::path &&target, const Version &version) :
+		source(std::move(source)),
 		target(std::move(target)),
 		version(version)
 	{}
 
-	Update(fs::path &&source, fs::path &&target) :
-		source(source),
-		target(std::move(target))
-	{}
+	std::string name() const { return source.stem().string(); }
 
-	std::string name() { return source.stem().string(); }
-
-	friend std::ostream& operator<<(std::ostream& os , const Update &update) {
-		os << "Update(" << update.source.string() << " -> " << update.target.string() << ')';
+	friend std::ostream& operator<<(std::ostream& os , const Update &self) {
+		os << "Update(" << self.source.string() << " -> " << self.target.string() << ')';
 		return os;
 	}
 };
 
-typedef std::vector<Update> Updates;
+struct Incompat
+{
+	fs::path bundle;
+	Version version;
+
+	Incompat(fs::path &&bundle, const Version &version) :
+		bundle(std::move(bundle)),
+		version(version)
+	{}
+
+	std::string name() const { return bundle.stem().string(); }
+
+	friend std::ostream& operator<<(std::ostream& os , const Incompat &self) {
+		os << "Incompat(" << self.bundle.string() << ')';
+		return os;
+	}
+};
+
+struct Updates
+{
+	std::vector<Incompat> incompats;
+	std::vector<Update> updates;
+};
 
 
 struct PresetUpdater::priv
@@ -206,7 +160,7 @@ bool PresetUpdater::priv::get_file(const std::string &url, const fs::path &targe
 			BOOST_LOG_TRIVIAL(error) << boost::format("Error getting: `%1%`: HTTP %2%, %3%")
 				% url
 				% http_status
-				% body;
+				% error;
 		})
 		.on_complete([&](std::string body, unsigned http_status) {
 			fs::fstream file(tmp_path, std::ios::out | std::ios::binary | std::ios::trunc);
@@ -248,7 +202,7 @@ void PresetUpdater::priv::sync_version() const
 			BOOST_LOG_TRIVIAL(error) << boost::format("Error getting: `%1%`: HTTP %2%, %3%")
 				% version_check_url
 				% http_status
-				% body;
+				% error;
 		})
 		.on_complete([&](std::string body, unsigned http_status) {
 			boost::trim(body);
@@ -354,7 +308,7 @@ Updates PresetUpdater::priv::get_config_updates() const
 	BOOST_LOG_TRIVIAL(info) << "Checking for cached configuration updates...";
 
 	for (const auto idx : index_db) {
-		const auto bundle_path = vendor_path / (idx.vendor() + ".ini");
+		auto bundle_path = vendor_path / (idx.vendor() + ".ini");
 
 		if (! fs::exists(bundle_path)) {
 			BOOST_LOG_TRIVIAL(info) << "Bundle not present for index, skipping: " << idx.vendor();
@@ -377,14 +331,12 @@ Updates PresetUpdater::priv::get_config_updates() const
 
 		BOOST_LOG_TRIVIAL(debug) << boost::format("Vendor: %1%, version installed: %2%, version cached: %3%")
 			% vp.name
-			% recommended->config_version.to_string()
-			% ver_current->config_version.to_string();
+			% ver_current->config_version.to_string()
+			% recommended->config_version.to_string();
 
 		if (! ver_current->is_current_slic3r_supported()) {
 			BOOST_LOG_TRIVIAL(warning) << "Current Slic3r incompatible with installed bundle: " << bundle_path.string();
-
-			// TODO: Downgrade situation
-
+			updates.incompats.emplace_back(std::move(bundle_path), *ver_current);
 		} else if (recommended->config_version > ver_current->config_version) {
 			// Config bundle update situation
 
@@ -406,7 +358,7 @@ Updates PresetUpdater::priv::get_config_updates() const
 
 			const auto cached_vp = VendorProfile::from_ini(path_in_cache, false);
 			if (cached_vp.config_version == recommended->config_version) {
-				updates.emplace_back(std::move(path_in_cache), bundle_path, *recommended);
+				updates.updates.emplace_back(std::move(path_in_cache), std::move(bundle_path), *recommended);
 			}
 		}
 	}
@@ -416,28 +368,43 @@ Updates PresetUpdater::priv::get_config_updates() const
 
 void PresetUpdater::priv::perform_updates(Updates &&updates, bool snapshot) const
 {
-	BOOST_LOG_TRIVIAL(info) << boost::format("Performing %1% updates") % updates.size();
+	if (updates.incompats.size() > 0) {
+		if (snapshot) {
+			BOOST_LOG_TRIVIAL(info) << "Taking a snapshot...";
+			SnapshotDB::singleton().take_snapshot(*GUI::get_app_config(), Snapshot::SNAPSHOT_DOWNGRADE);
+		}
 
-	if (snapshot) {
-		BOOST_LOG_TRIVIAL(info) << "Taking a snapshot...";
-		SnapshotDB::singleton().take_snapshot(*GUI::get_app_config(), Snapshot::SNAPSHOT_UPGRADE);
+		BOOST_LOG_TRIVIAL(info) << boost::format("Deleting %1% incompatible bundles") % updates.incompats.size();
+
+		for (const auto &incompat : updates.incompats) {
+			BOOST_LOG_TRIVIAL(info) << '\t' << incompat;
+			fs::remove(incompat.bundle);
+		}
 	}
+	else if (updates.updates.size() > 0) {
+		if (snapshot) {
+			BOOST_LOG_TRIVIAL(info) << "Taking a snapshot...";
+			SnapshotDB::singleton().take_snapshot(*GUI::get_app_config(), Snapshot::SNAPSHOT_UPGRADE);
+		}
 
-	for (const auto &update : updates) {
-		BOOST_LOG_TRIVIAL(info) << '\t' << update;
+		BOOST_LOG_TRIVIAL(info) << boost::format("Performing %1% updates") % updates.updates.size();
 
-		fs::copy_file(update.source, update.target, fs::copy_option::overwrite_if_exists);
+		for (const auto &update : updates.updates) {
+			BOOST_LOG_TRIVIAL(info) << '\t' << update;
 
-		PresetBundle bundle;
-		bundle.load_configbundle(update.target.string(), PresetBundle::LOAD_CFGBNDLE_SYSTEM);
+			fs::copy_file(update.source, update.target, fs::copy_option::overwrite_if_exists);
 
-		auto preset_remover = [](const Preset &preset) {
-			fs::remove(preset.file);
-		};
+			PresetBundle bundle;
+			bundle.load_configbundle(update.target.string(), PresetBundle::LOAD_CFGBNDLE_SYSTEM);
 
-		for (const auto &preset : bundle.prints)    { preset_remover(preset); }
-		for (const auto &preset : bundle.filaments) { preset_remover(preset); }
-		for (const auto &preset : bundle.printers)  { preset_remover(preset); }
+			auto preset_remover = [](const Preset &preset) {
+				fs::remove(preset.file);
+			};
+
+			for (const auto &preset : bundle.prints)    { preset_remover(preset); }
+			for (const auto &preset : bundle.filaments) { preset_remover(preset); }
+			for (const auto &preset : bundle.printers)  { preset_remover(preset); }
+		}
 	}
 }
 
@@ -497,7 +464,7 @@ void PresetUpdater::slic3r_update_notify()
 	if (ver_online) {
 		// Only display the notification if the version available online is newer AND if we haven't seen it before
 		if (*ver_online > *ver_slic3r && (! ver_online_seen || *ver_online_seen < *ver_online)) {
-			UpdateNotification notification(*ver_slic3r, *ver_online);
+			GUI::MsgUpdateSlic3r notification(*ver_slic3r, *ver_online);
 			notification.ShowModal();
 			if (notification.disable_version_check()) {
 				app_config->set("version_check", "0");
@@ -508,32 +475,55 @@ void PresetUpdater::slic3r_update_notify()
 	}
 }
 
-void PresetUpdater::config_update() const
+bool PresetUpdater::config_update() const
 {
-	if (! p->enabled_config_update) { return; }
+	if (! p->enabled_config_update) { return true; }
 
 	auto updates = p->get_config_updates();
-	if (updates.size() > 0) {
-		BOOST_LOG_TRIVIAL(info) << boost::format("Update of %1% bundles available. Asking for confirmation ...") % updates.size();
+	if (updates.incompats.size() > 0) {
+		BOOST_LOG_TRIVIAL(info) << boost::format("%1% bundles incompatible. Asking for action...") % updates.incompats.size();
 
-		const auto msg = _(L("Configuration update is available. Would you like to install it?"));
-
-		auto ext_msg = _(L(
-			"Note that a full configuration snapshot will be created first. It can then be restored at any time "
-			"should there be a problem with the new version.\n\n"
-			"Updated configuration bundles:\n"
-		));
-
-		for (const auto &update : updates) {
-			ext_msg += update.target.stem().string() + " " + update.version.config_version.to_string();
-			if (! update.version.comment.empty()) {
-				ext_msg += std::string(" (") + update.version.comment + ")";
-			}
-			ext_msg += "\n";
+		std::unordered_map<std::string, std::string> incompats_map;
+		for (const auto &incompat : updates.incompats) {
+			auto vendor = incompat.name();
+			auto restrictions = wxString::Format(_(L("requires min. %s and max. %s")),
+				incompat.version.min_slic3r_version.to_string(),
+				incompat.version.max_slic3r_version.to_string()
+			);
+			incompats_map.emplace(std::move(vendor), std::move(restrictions));
 		}
 
-		wxMessageDialog dlg(NULL, msg, _(L("Configuration update")), wxYES_NO|wxCENTRE);
-		dlg.SetExtendedMessage(ext_msg);
+		GUI::MsgDataIncompatible dlg(std::move(incompats_map));
+		const auto res = dlg.ShowModal();
+		if (res == wxID_REPLACE) {
+			BOOST_LOG_TRIVIAL(info) << "User wants to re-configure...";
+			p->perform_updates(std::move(updates));
+			GUI::ConfigWizard wizard(nullptr, GUI::ConfigWizard::RR_DATA_INCOMPAT);
+			if (wizard.run(GUI::get_preset_bundle(), this)) {
+				p->had_config_update = true;
+			} else {
+				return false;
+			}
+		} else {
+			BOOST_LOG_TRIVIAL(info) << "User wants to exit Slic3r, bye...";
+			return false;
+		}
+	}
+	else if (updates.updates.size() > 0) {
+		BOOST_LOG_TRIVIAL(info) << boost::format("Update of %1% bundles available. Asking for confirmation ...") % updates.updates.size();
+
+		std::unordered_map<std::string, std::string> updates_map;
+		for (const auto &update : updates.updates) {
+			auto vendor = update.name();
+			auto ver_str = update.version.config_version.to_string();
+			if (! update.version.comment.empty()) {
+				ver_str += std::string(" (") + update.version.comment + ")";
+			}
+			updates_map.emplace(std::move(vendor), std::move(ver_str));
+		}
+
+		GUI::MsgUpdateConfig dlg(std::move(updates_map));
+
 		const auto res = dlg.ShowModal();
 		if (res == wxID_YES) {
 			BOOST_LOG_TRIVIAL(debug) << "User agreed to perform the update";
@@ -546,9 +536,11 @@ void PresetUpdater::config_update() const
 	} else {
 		BOOST_LOG_TRIVIAL(info) << "No configuration updates available.";
 	}
+
+	return true;
 }
 
-void PresetUpdater::install_bundles_rsrc(std::vector<std::string> bundles, bool snapshot)
+void PresetUpdater::install_bundles_rsrc(std::vector<std::string> bundles, bool snapshot) const
 {
 	Updates updates;
 
@@ -557,7 +549,7 @@ void PresetUpdater::install_bundles_rsrc(std::vector<std::string> bundles, bool
 	for (const auto &bundle : bundles) {
 		auto path_in_rsrc = p->rsrc_path / bundle;
 		auto path_in_vendors = p->vendor_path / bundle;
-		updates.emplace_back(std::move(path_in_rsrc), std::move(path_in_vendors));
+		updates.updates.emplace_back(std::move(path_in_rsrc), std::move(path_in_vendors), Version());
 	}
 
 	p->perform_updates(std::move(updates), snapshot);
diff --git a/xs/src/slic3r/Utils/PresetUpdater.hpp b/xs/src/slic3r/Utils/PresetUpdater.hpp
index 287f20652..6a53cca81 100644
--- a/xs/src/slic3r/Utils/PresetUpdater.hpp
+++ b/xs/src/slic3r/Utils/PresetUpdater.hpp
@@ -27,10 +27,11 @@ public:
 	void slic3r_update_notify();
 
 	// If updating is enabled, check if updates are available in cache, if so, ask about installation.
-	void config_update() const;
+	// A false return value implies Slic3r should exit due to incompatibility of configuration.
+	bool config_update() const;
 
 	// "Update" a list of bundles from resources (behaves like an online update).
-	void install_bundles_rsrc(std::vector<std::string> bundles, bool snapshot = true);
+	void install_bundles_rsrc(std::vector<std::string> bundles, bool snapshot = true) const;
 private:
 	struct priv;
 	std::unique_ptr<priv> p;
diff --git a/xs/xsp/GUI.xsp b/xs/xsp/GUI.xsp
index 0d9f0b62e..ca90c54f2 100644
--- a/xs/xsp/GUI.xsp
+++ b/xs/xsp/GUI.xsp
@@ -60,10 +60,10 @@ void set_app_config(AppConfig *app_config)
 bool check_unsaved_changes()
     %code%{ RETVAL=Slic3r::GUI::check_unsaved_changes(); %};
 
-void config_wizard_startup(int app_config_exists)
+bool config_wizard_startup(int app_config_exists)
     %code%{
         try {
-            Slic3r::GUI::config_wizard_startup(app_config_exists != 0);
+            RETVAL=Slic3r::GUI::config_wizard_startup(app_config_exists != 0);
         } catch (std::exception& e) {
             croak("%s\n", e.what());
         }
diff --git a/xs/xsp/Utils_PresetUpdater.xsp b/xs/xsp/Utils_PresetUpdater.xsp
index 53c3aa985..dc874acab 100644
--- a/xs/xsp/Utils_PresetUpdater.xsp
+++ b/xs/xsp/Utils_PresetUpdater.xsp
@@ -9,5 +9,5 @@
     PresetUpdater(int version_online_event);
     void sync(PresetBundle* preset_bundle);
     void slic3r_update_notify();
-    void config_update();
+    bool config_update();
 };