diff --git a/lib/Slic3r.pm b/lib/Slic3r.pm
index 020edd70f..44100db8c 100644
--- a/lib/Slic3r.pm
+++ b/lib/Slic3r.pm
@@ -49,7 +49,6 @@ use Slic3r::Model;
 use Slic3r::Point;
 use Slic3r::Polygon;
 use Slic3r::Polyline;
-use Slic3r::Print;
 use Slic3r::Print::Object;
 use Slic3r::Print::Simple;
 use Slic3r::Surface;
diff --git a/lib/Slic3r/GUI.pm b/lib/Slic3r/GUI.pm
index 01143aeee..216be3441 100644
--- a/lib/Slic3r/GUI.pm
+++ b/lib/Slic3r/GUI.pm
@@ -33,7 +33,6 @@ use constant MODEL_WILDCARD => join '|', @{&FILE_WILDCARDS}{qw(known stl obj amf
 
 # Datadir provided on the command line.
 our $datadir;
-# If set, the "Controller" tab for the control of the printer over serial line and the serial port settings are hidden.
 our $no_plater;
 our @cb;
 
@@ -103,8 +102,6 @@ sub OnInit {
     print STDERR "Creating main frame...\n";
     Wx::Image::FindHandlerType(wxBITMAP_TYPE_PNG) || Wx::Image::AddHandler(Wx::PNGHandler->new);
     $self->{mainframe} = my $frame = Slic3r::GUI::MainFrame->new(
-        # If set, the "Controller" tab for the control of the printer over serial line and the serial port settings are hidden.
-        no_controller   => $self->{app_config}->get('no_controller'),
         no_plater       => $no_plater,
         lang_ch_event   => $LANGUAGE_CHANGE_EVENT,
         preferences_event => $PREFERENCES_EVENT,
@@ -170,8 +167,6 @@ sub recreate_GUI{
     my ($self) = @_;
     my $topwindow = $self->GetTopWindow();
     $self->{mainframe} = my $frame = Slic3r::GUI::MainFrame->new(
-        # If set, the "Controller" tab for the control of the printer over serial line and the serial port settings are hidden.
-        no_controller   => $self->{app_config}->get('no_controller'),
         no_plater       => $no_plater,
         lang_ch_event   => $LANGUAGE_CHANGE_EVENT,
         preferences_event => $PREFERENCES_EVENT,
diff --git a/lib/Slic3r/GUI/MainFrame.pm b/lib/Slic3r/GUI/MainFrame.pm
index 554beba68..3f023c06f 100644
--- a/lib/Slic3r/GUI/MainFrame.pm
+++ b/lib/Slic3r/GUI/MainFrame.pm
@@ -57,8 +57,6 @@ sub new {
     }
         
     # store input params
-    # If set, the "Controller" tab for the control of the printer over serial line and the serial port settings are hidden.
-    $self->{no_controller} = $params{no_controller};
     $self->{no_plater} = $params{no_plater};
     $self->{loaded} = 0;
     $self->{lang_ch_event} = $params{lang_ch_event};
@@ -199,8 +197,6 @@ sub _init_tabpanel {
                             ? 'load_current_preset' : 'update_tab_ui';
                         $self->{options_tabs}{$tab_name_other}->$update_action;
                     }
-                    # Update the controller printers.
-                    $self->{controller}->update_presets($presets) if $self->{controller};
                 }
                 $self->{plater}->on_config_change($tab->get_config);
             }
@@ -239,8 +235,7 @@ sub _init_tabpanel {
         $self->{plater}->update();
     });
         
-
-    Slic3r::GUI::create_preset_tabs($self->{no_controller}, $VALUE_CHANGE_EVENT, $PRESETS_CHANGED_EVENT);
+    Slic3r::GUI::create_preset_tabs($VALUE_CHANGE_EVENT, $PRESETS_CHANGED_EVENT);
     $self->{options_tabs} = {};
     for my $tab_name (qw(print filament sla_material printer)) {
         $self->{options_tabs}{$tab_name} = Slic3r::GUI::get_preset_tab("$tab_name");
diff --git a/lib/Slic3r/Print.pm b/lib/Slic3r/Print.pm
deleted file mode 100644
index 79bc41ca3..000000000
--- a/lib/Slic3r/Print.pm
+++ /dev/null
@@ -1,69 +0,0 @@
-# The slicing work horse.
-# Extends C++ class Slic3r::Print
-package Slic3r::Print;
-use strict;
-use warnings;
-
-use File::Basename qw(basename fileparse);
-use File::Spec;
-use List::Util qw(min max first sum);
-use Slic3r::ExtrusionLoop ':roles';
-use Slic3r::ExtrusionPath ':roles';
-use Slic3r::Flow ':roles';
-use Slic3r::Geometry qw(X Y unscale);
-use Slic3r::Geometry::Clipper qw(diff_ex union_ex intersection_ex intersection offset
-    union JT_ROUND JT_SQUARE);
-use Slic3r::Print::State ':steps';
-
-sub size {
-    my $self = shift;
-    return $self->bounding_box->size;
-}
-
-sub run_post_process_scripts {
-    my ($self, $output_file) = @_;
-    # run post-processing scripts
-    if (@{$self->config->post_process}) {
-#        $self->set_status(95, "Running post-processing scripts");
-        $self->config->setenv;
-        for my $script (@{$self->config->post_process}) {
-            # Ignore empty post processing script lines.
-            next if $script =~ /^\s*$/;
-            Slic3r::debugf "  '%s' '%s'\n", $script, $output_file;
-            # -x doesn't return true on Windows except for .exe files
-            if (($^O eq 'MSWin32') ? !(-e $script) : !(-x $script)) {
-                die "The configured post-processing script is not executable: check permissions. ($script)\n";
-            }
-            if ($^O eq 'MSWin32' && $script =~ /\.[pP][lL]/) {
-                # The current process (^X) may be slic3r.exe or slic3r-console.exe.
-                # Replace it with the current perl interpreter.
-                my($filename, $directories, $suffix) = fileparse($^X);
-                $filename =~ s/^slic3r.*$/perl5\.24\.0\.exe/;
-                my $interpreter = $directories . $filename;
-                system($interpreter, $script, $output_file);
-            } else {
-                system($script, $output_file);
-            }
-        }
-    }
-}
-
-sub export_png {
-    my $self = shift;
-    my %params = @_;
-
-    my @sobjects =  @{$self->objects};
-    my $objnum = scalar @sobjects;
-    for(my $oi = 0; $oi < $objnum; $oi++)
-    { 
-        $sobjects[$oi]->slice;
-        $self->set_status(($oi + 1)*100/$objnum - 1, "Slicing...");
-    }
-
-    my $fh = $params{output_file};
-    $self->set_status(90, "Exporting zipped archive...");
-    $self->print_to_png($fh);
-    $self->set_status(100, "Done.");
-}
-
-1;
diff --git a/slic3r.pl b/slic3r.pl
index 4bf687cf5..38c10a900 100755
--- a/slic3r.pl
+++ b/slic3r.pl
@@ -38,7 +38,6 @@ my %cli_options = ();
         'load=s@'               => \$opt{load},
         'autosave=s'            => \$opt{autosave},
         'ignore-nonexistent-config' => \$opt{ignore_nonexistent_config},
-        'no-controller'         => \$opt{no_controller},
         'no-plater'             => \$opt{no_plater},
         'gui-mode=s'            => \$opt{obsolete_ignore_this_option_gui_mode},
         'datadir=s'             => \$opt{datadir},
@@ -107,7 +106,6 @@ if ((!@ARGV || $opt{gui}) && !$opt{no_gui} && !$opt{save} && eval "require Slic3
     {
         no warnings 'once';
         $Slic3r::GUI::datadir       = Slic3r::decode_path($opt{datadir} // '');
-        $Slic3r::GUI::no_controller = $opt{no_controller};
         $Slic3r::GUI::no_plater     = $opt{no_plater};
         $Slic3r::GUI::autosave      = $opt{autosave};
     }
diff --git a/xs/CMakeLists.txt b/xs/CMakeLists.txt
index 7e35a27b1..a442530db 100644
--- a/xs/CMakeLists.txt
+++ b/xs/CMakeLists.txt
@@ -105,6 +105,8 @@ add_library(libslic3r STATIC
     ${LIBDIR}/libslic3r/GCode/Analyzer.hpp
     ${LIBDIR}/libslic3r/GCode/CoolingBuffer.cpp
     ${LIBDIR}/libslic3r/GCode/CoolingBuffer.hpp
+    ${LIBDIR}/libslic3r/GCode/PostProcessor.cpp
+    ${LIBDIR}/libslic3r/GCode/PostProcessor.hpp    
     ${LIBDIR}/libslic3r/GCode/PressureEqualizer.cpp
     ${LIBDIR}/libslic3r/GCode/PressureEqualizer.hpp
     ${LIBDIR}/libslic3r/GCode/PreviewData.cpp
diff --git a/xs/src/libslic3r/GCode.cpp b/xs/src/libslic3r/GCode.cpp
index 91c9d6b0f..ac09db4bd 100644
--- a/xs/src/libslic3r/GCode.cpp
+++ b/xs/src/libslic3r/GCode.cpp
@@ -13,6 +13,7 @@
 #include <boost/algorithm/string.hpp>
 #include <boost/algorithm/string/find.hpp>
 #include <boost/foreach.hpp>
+#include <boost/filesystem.hpp>
 #include <boost/log/trivial.hpp>
 
 #include <boost/nowide/iostream.hpp>
@@ -418,14 +419,9 @@ void GCode::do_export(Print *print, const char *path, GCodePreviewData *preview_
 {
     PROFILE_CLEAR();
 
-    if (print->is_step_done(psGCodeExport)) {
-        // Does the file exist? If so, we hope that it is still valid.
-        FILE *f = boost::nowide::fopen(path, "r");
-        if (f != nullptr) {
-            ::fclose(f);
-            return;
-        }
-    }
+    // Does the file exist? If so, we hope that it is still valid.
+    if (print->is_step_done(psGCodeExport) && boost::filesystem::exists(boost::filesystem::path(path)))
+        return;
 
 	print->set_started(psGCodeExport);
 
diff --git a/xs/src/libslic3r/GCode/PostProcessor.cpp b/xs/src/libslic3r/GCode/PostProcessor.cpp
new file mode 100644
index 000000000..f3b28f398
--- /dev/null
+++ b/xs/src/libslic3r/GCode/PostProcessor.cpp
@@ -0,0 +1,55 @@
+#include "PostProcessor.hpp"
+
+namespace Slic3r {
+
+#ifdef WIN32
+
+//FIXME Ignore until we include boost::process
+void run_post_process_scripts(const std::string &path, const PrintConfig &config)
+{
+}
+
+#else
+
+#include <boost/process/system.hpp>
+
+void run_post_process_scripts(const std::string &path, const PrintConfig &config)
+{
+    if (config.post_process.values.empty())
+        return;
+    config.setenv_();
+    for (std::string script: config.post_process.values) {
+        // Ignore empty post processing script lines.
+        boost::trim(script);
+        if (script.empty())
+            continue;
+        BOOST_LOG_TRIVIAL(info) << "Executing script " << script << " on file " << path;
+        if (! boost::filesystem::exists(boost::filesystem::path(path)))
+            throw std::runtime_exception(std::string("The configured post-processing script does not exist: ") + path);
+#ifndef WIN32
+        file_status fs = boost::filesystem::status(path);
+        //FIXME test if executible by the effective UID / GID.
+        // throw std::runtime_exception(std::string("The configured post-processing script is not executable: check permissions. ") + path));
+#endif
+        int result = 0;
+#ifdef WIN32
+        if (boost::iends_with(file, ".gcode")) {
+            // The current process may be slic3r.exe or slic3r-console.exe.
+            // Find the path of the process:
+            wchar_t wpath_exe[_MAX_PATH + 1];
+            ::GetModuleFileNameW(nullptr, wpath_exe, _MAX_PATH);
+            boost::filesystem::path path_exe(wpath_exe);
+            // Replace it with the current perl interpreter.
+            result = boost::process::system((path_exe.parent_path() / "perl5.24.0.exe").string(), script, output_file);
+        } else
+#else
+        result = boost::process::system(script, output_file);
+#endif
+        if (result < 0)
+            BOOST_LOG_TRIVIAL(error) << "Script " << script << " on file " << path << " failed. Negative error code returned.";
+    }
+}
+
+#endif
+
+} // namespace Slic3r
diff --git a/xs/src/libslic3r/GCode/PostProcessor.hpp b/xs/src/libslic3r/GCode/PostProcessor.hpp
new file mode 100644
index 000000000..ce47374cb
--- /dev/null
+++ b/xs/src/libslic3r/GCode/PostProcessor.hpp
@@ -0,0 +1,15 @@
+#ifndef slic3r_GCode_PostProcessor_hpp_
+#define slic3r_GCode_PostProcessor_hpp_
+
+#include <string>
+
+#include "../libslic3r.h"
+#include "../PrintConfig.hpp"
+
+namespace Slic3r {
+
+extern void run_post_process_scripts(const std::string &path, const PrintConfig &config);
+
+} // namespace Slic3r
+
+#endif /* slic3r_GCode_PostProcessor_hpp_ */
diff --git a/xs/src/libslic3r/Print.cpp b/xs/src/libslic3r/Print.cpp
index 651513c62..03034cfdc 100644
--- a/xs/src/libslic3r/Print.cpp
+++ b/xs/src/libslic3r/Print.cpp
@@ -1331,8 +1331,15 @@ std::string Print::output_filepath(const std::string &path) const
     return path;
 }
 
-void Print::print_to_png(const std::string &dirpath)
+void Print::export_png(const std::string &dirpath)
 {
+    size_t idx = 0;
+    for (PrintObject *obj : m_objects) {
+        obj->slice();
+        this->set_status(int(floor(idx * 100. / m_objects.size() + 0.5)), "Slicing...");
+        ++ idx;
+    }
+    this->set_status(90, "Exporting zipped archive...");
     print_to<FilePrinterFormat::PNG>(*this,
         dirpath,
         float(m_config.bed_size_x.value),
@@ -1341,6 +1348,7 @@ void Print::print_to_png(const std::string &dirpath)
         int(m_config.pixel_height.value),
         float(m_config.exp_time.value),
         float(m_config.exp_time_first.value));
+    this->set_status(100, "Done.");
 }
 
 // Returns extruder this eec should be printed with, according to PrintRegion config
diff --git a/xs/src/libslic3r/Print.hpp b/xs/src/libslic3r/Print.hpp
index 106640c4d..8999f27d7 100644
--- a/xs/src/libslic3r/Print.hpp
+++ b/xs/src/libslic3r/Print.hpp
@@ -368,7 +368,7 @@ public:
     void                process();
     void                export_gcode(const std::string &path_template, GCodePreviewData *preview_data);
     // SLA export, temporary.
-    void                print_to_png(const std::string &dirpath);
+    void                export_png(const std::string &dirpath);
 
     // methods for handling state
     bool                is_step_done(PrintStep step) const { return m_state.is_done(step); }
diff --git a/xs/src/slic3r/GUI/BackgroundSlicingProcess.cpp b/xs/src/slic3r/GUI/BackgroundSlicingProcess.cpp
index 2f88b25ca..338db3010 100644
--- a/xs/src/slic3r/GUI/BackgroundSlicingProcess.cpp
+++ b/xs/src/slic3r/GUI/BackgroundSlicingProcess.cpp
@@ -7,6 +7,7 @@
 
 // Print now includes tbb, and tbb includes Windows. This breaks compilation of wxWidgets if included before wx.
 #include "../../libslic3r/Print.hpp"
+#include "../../libslic3r/GCode/PostProcessor.hpp"
 
 //#undef NDEBUG
 #include <cassert>
@@ -59,9 +60,12 @@ void BackgroundSlicingProcess::thread_proc()
 		    if (! m_print->canceled()) {
 				wxQueueEvent(GUI::g_wxPlater, new wxCommandEvent(m_event_sliced_id));
 			    m_print->export_gcode(m_temp_output_path, m_gcode_preview_data);
-			    if (! m_print->canceled() && ! m_output_path.empty() &&
-			    	copy_file(m_temp_output_path, m_output_path) != 0)
-		    		throw std::runtime_error("Copying of the temporary G-code to the output G-code failed");
+			    if (! m_print->canceled() && ! m_output_path.empty()) {
+			    	if (copy_file(m_temp_output_path, m_output_path) != 0)
+		    			throw std::runtime_error("Copying of the temporary G-code to the output G-code failed");
+		    		m_print->set_status(95, "Running post-processing scripts");
+		    		run_post_process_scripts(m_output_path, m_print->config());
+		    	}
 		    }
 		} catch (CanceledException &ex) {
 			// Canceled, this is all right.
diff --git a/xs/src/slic3r/GUI/GUI.cpp b/xs/src/slic3r/GUI/GUI.cpp
index e5ab22e8e..7ce858aec 100644
--- a/xs/src/slic3r/GUI/GUI.cpp
+++ b/xs/src/slic3r/GUI/GUI.cpp
@@ -611,13 +611,13 @@ void open_preferences_dialog(int event_preferences)
 	dlg->ShowModal();
 }
 
-void create_preset_tabs(bool no_controller, int event_value_change, int event_presets_changed)
+void create_preset_tabs(int event_value_change, int event_presets_changed)
 {	
 	update_label_colours_from_appconfig();
-	add_created_tab(new TabPrint	    (g_wxTabPanel, no_controller), event_value_change, event_presets_changed);
-	add_created_tab(new TabFilament	    (g_wxTabPanel, no_controller), event_value_change, event_presets_changed);
-	add_created_tab(new TabSLAMaterial  (g_wxTabPanel, no_controller), event_value_change, event_presets_changed);
-	add_created_tab(new TabPrinter	    (g_wxTabPanel, no_controller), event_value_change, event_presets_changed);
+	add_created_tab(new TabPrint	    (g_wxTabPanel), event_value_change, event_presets_changed);
+	add_created_tab(new TabFilament	    (g_wxTabPanel), event_value_change, event_presets_changed);
+	add_created_tab(new TabSLAMaterial  (g_wxTabPanel), event_value_change, event_presets_changed);
+	add_created_tab(new TabPrinter	    (g_wxTabPanel), event_value_change, event_presets_changed);
 }
 
 std::vector<PresetTab> preset_tabs = {
diff --git a/xs/src/slic3r/GUI/GUI.hpp b/xs/src/slic3r/GUI/GUI.hpp
index 7105b8b4e..05ed580a3 100644
--- a/xs/src/slic3r/GUI/GUI.hpp
+++ b/xs/src/slic3r/GUI/GUI.hpp
@@ -165,7 +165,7 @@ extern void config_wizard(int run_reason);
 extern void open_preferences_dialog(int event_preferences);
 
 // Create a new preset tab (print, filament and printer),
-void create_preset_tabs(bool no_controller, int event_value_change, int event_presets_changed);
+void create_preset_tabs(int event_value_change, int event_presets_changed);
 TabIface* get_preset_tab_iface(char *name);
 
 // add it at the end of the tab panel.
diff --git a/xs/src/slic3r/GUI/Preferences.cpp b/xs/src/slic3r/GUI/Preferences.cpp
index 2500afa13..89a8ead92 100644
--- a/xs/src/slic3r/GUI/Preferences.cpp
+++ b/xs/src/slic3r/GUI/Preferences.cpp
@@ -71,14 +71,6 @@ void PreferencesDialog::build()
 	option = Option (def, "preset_update");
 	m_optgroup->append_single_option_line(option);
 
-	def.label = L("Disable USB/serial connection");
-	def.type = coBool;
-	def.tooltip = L("Disable communication with the printer over a serial / USB cable. "
-					  "This simplifies the user interface in case the printer is never attached to the computer.");
-	def.default_value = new ConfigOptionBool{ app_config->get("no_controller")[0] == '1' }; // 1;
-	option = Option (def,"no_controller");
-	m_optgroup->append_single_option_line(option);
-
 	def.label = L("Suppress \" - default - \" presets");
 	def.type = coBool;
 	def.tooltip = L("Suppress \" - default - \" presets in the Print / Filament / Printer "
@@ -118,8 +110,7 @@ void PreferencesDialog::build()
 
 void PreferencesDialog::accept()
 {
-	if (m_values.find("no_controller")    != m_values.end()||
-		m_values.find("no_defaults")      != m_values.end()||
+	if (m_values.find("no_defaults")      != m_values.end()||
 		m_values.find("use_legacy_opengl")!= m_values.end()) {
 		warning_catcher(this, _(L("You need to restart Slic3r to make the changes effective.")));
 	}
diff --git a/xs/src/slic3r/GUI/Tab.cpp b/xs/src/slic3r/GUI/Tab.cpp
index 5daf2784d..83b834219 100644
--- a/xs/src/slic3r/GUI/Tab.cpp
+++ b/xs/src/slic3r/GUI/Tab.cpp
@@ -1528,6 +1528,7 @@ void TabPrinter::build_fff()
 		};
 
 
+#if 0
 		if (!m_no_controller)
 		{
 		optgroup = page->new_optgroup(_(L("USB/Serial connection")));
@@ -1572,6 +1573,7 @@ void TabPrinter::build_fff()
 			line.append_widget(serial_test);
 			optgroup->append_line(line);
 		}
+#endif
 
 		optgroup = page->new_optgroup(_(L("Printer Host upload")));
 
@@ -1745,8 +1747,10 @@ void TabPrinter::build_fff()
 
 	build_extruder_pages();
 
+#if 0
 	if (!m_no_controller)
 		update_serial_ports();
+#endif
 }
 
 void TabPrinter::build_sla()
diff --git a/xs/src/slic3r/GUI/Tab.hpp b/xs/src/slic3r/GUI/Tab.hpp
index a1214465e..e4e37d4eb 100644
--- a/xs/src/slic3r/GUI/Tab.hpp
+++ b/xs/src/slic3r/GUI/Tab.hpp
@@ -170,7 +170,6 @@ protected:
 	std::vector<PageShp>			m_pages;
 	bool				m_disable_tree_sel_changed_event;
 	bool				m_show_incompatible_presets;
-	bool				m_no_controller;
 
 	std::vector<std::string>	m_reload_dependent_tabs = {};
 	enum OptStatus { osSystemValue = 1, osInitValue = 2 };
@@ -199,8 +198,8 @@ public:
 
 public:
 	Tab() {}
-	Tab(wxNotebook* parent, const wxString& title, const char* name, bool no_controller) : 
-		m_parent(parent), m_title(title), m_name(name), m_no_controller(no_controller) {
+	Tab(wxNotebook* parent, const wxString& title, const char* name) : 
+		m_parent(parent), m_title(title), m_name(name) {
 		Create(parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxBK_LEFT | wxTAB_TRAVERSAL, name);
 		get_tabs_list().push_back(this);
 	}
@@ -282,8 +281,8 @@ class TabPrint : public Tab
 {
 public:
 	TabPrint() {}
-	TabPrint(wxNotebook* parent, bool no_controller) : 
-		Tab(parent, _(L("Print Settings")), "print", no_controller) {}
+	TabPrint(wxNotebook* parent) : 
+		Tab(parent, _(L("Print Settings")), "print") {}
 	~TabPrint(){}
 
 	ogStaticText*	m_recommended_thin_wall_thickness_description_line;
@@ -302,8 +301,8 @@ class TabFilament : public Tab
 	ogStaticText*	m_cooling_description_line;
 public:
 	TabFilament() {}
-	TabFilament(wxNotebook* parent, bool no_controller) : 
-		Tab(parent, _(L("Filament Settings")), "filament", no_controller) {}
+	TabFilament(wxNotebook* parent) : 
+		Tab(parent, _(L("Filament Settings")), "filament") {}
 	~TabFilament(){}
 
 	void		build() override;
@@ -335,7 +334,7 @@ public:
     PrinterTechnology               m_printer_technology = ptFFF;
 
 	TabPrinter() {}
-	TabPrinter(wxNotebook* parent, bool no_controller) : Tab(parent, _(L("Printer Settings")), "printer", no_controller) {}
+	TabPrinter(wxNotebook* parent) : Tab(parent, _(L("Printer Settings")), "printer") {}
 	~TabPrinter(){}
 
 	void		build() override;
@@ -357,8 +356,8 @@ class TabSLAMaterial : public Tab
 {
 public:
     TabSLAMaterial() {}
-    TabSLAMaterial(wxNotebook* parent, bool no_controller) :
-		Tab(parent, _(L("SLA Material Settings")), "sla_material", no_controller) {}
+    TabSLAMaterial(wxNotebook* parent) :
+		Tab(parent, _(L("SLA Material Settings")), "sla_material") {}
     ~TabSLAMaterial(){}
 
 	void		build() override;
diff --git a/xs/xsp/GUI.xsp b/xs/xsp/GUI.xsp
index 3aee4035e..6700a4765 100644
--- a/xs/xsp/GUI.xsp
+++ b/xs/xsp/GUI.xsp
@@ -50,8 +50,8 @@ void set_plater(SV *ui)
 void add_menus(SV *ui, int event_preferences_changed, int event_language_change)    
     %code%{ Slic3r::GUI::add_menus((wxMenuBar*)wxPli_sv_2_object(aTHX_ ui, "Wx::MenuBar"), event_preferences_changed, event_language_change); %};
 
-void create_preset_tabs(bool no_controller, int event_value_change, int event_presets_changed)
-    %code%{ Slic3r::GUI::create_preset_tabs(no_controller, event_value_change, event_presets_changed); %};
+void create_preset_tabs(int event_value_change, int event_presets_changed)
+    %code%{ Slic3r::GUI::create_preset_tabs(event_value_change, event_presets_changed); %};
 
 void show_error_id(int id, std::string msg)
     %code%{ Slic3r::GUI::show_error_id(id, msg); %};
diff --git a/xs/xsp/Print.xsp b/xs/xsp/Print.xsp
index 3212d6538..f29cb52fc 100644
--- a/xs/xsp/Print.xsp
+++ b/xs/xsp/Print.xsp
@@ -151,8 +151,6 @@ _constant()
             }
         %};
         
-    void print_to_png(std::string dirpath);
-    
     void add_model_object(ModelObject* model_object, int idx = -1);
     bool apply_config(DynamicPrintConfig* config)
         %code%{ RETVAL = THIS->apply_config(*config); %};
@@ -166,6 +164,7 @@ _constant()
         %};
     Clone<BoundingBox> bounding_box();
     Clone<BoundingBox> total_bounding_box();
+    Clone<Point>       size() %code%{ RETVAL = THIS->bounding_box().size(); %};
 
     void set_callback_event(int evt) %code%{
         %};
@@ -196,4 +195,11 @@ _constant()
             }
         %};
 
+    void export_png(char *path) %code%{
+            try {
+                THIS->export_png(path);
+            } catch (std::exception& e) {
+                croak(e.what());
+            }
+        %};
 };