diff --git a/src/PrusaSlicer.cpp b/src/PrusaSlicer.cpp
index 45a333630..9bef4b419 100644
--- a/src/PrusaSlicer.cpp
+++ b/src/PrusaSlicer.cpp
@@ -60,8 +60,21 @@ PrinterTechnology get_printer_technology(const DynamicConfig &config)
 
 int CLI::run(int argc, char **argv) 
 {
+#ifdef _WIN32
 	// Switch boost::filesystem to utf8.
-    boost::nowide::nowide_filesystem();
+    try {
+        boost::nowide::nowide_filesystem();
+    } catch (const std::runtime_error& ex) {
+        std::string caption = std::string(SLIC3R_APP_NAME) + " Error";
+        std::string text = std::string("An error occured while setting up locale.\n") + SLIC3R_APP_NAME + " will now terminate.\n\n" + ex.what();
+    #ifdef SLIC3R_GUI
+        if (m_actions.empty())
+            MessageBoxA(NULL, text.c_str(), caption.c_str(), MB_OK | MB_ICONERROR);
+    #endif
+        boost::nowide::cerr << text.c_str() << std::endl;
+        return 1;
+    }
+#endif
 
 	if (! this->setup(argc, argv))
 		return 1;
diff --git a/src/libslic3r/PrintObject.cpp b/src/libslic3r/PrintObject.cpp
index 37cf0cccc..e19bceeb7 100644
--- a/src/libslic3r/PrintObject.cpp
+++ b/src/libslic3r/PrintObject.cpp
@@ -161,7 +161,7 @@ void PrintObject::make_perimeters()
         const PrintRegion &region = *m_print->regions()[region_id];
         if (! region.config().extra_perimeters || region.config().perimeters == 0 || region.config().fill_density == 0 || this->layer_count() < 2)
             continue;
-        
+
         BOOST_LOG_TRIVIAL(debug) << "Generating extra perimeters for region " << region_id << " in parallel - start";
         tbb::parallel_for(
             tbb::blocked_range<size_t>(0, m_layers.size() - 1),
@@ -2379,7 +2379,7 @@ void PrintObject::discover_horizontal_shells()
                     if (new_internal_solid.empty()) {
                         // No internal solid needed on this layer. In order to decide whether to continue
                         // searching on the next neighbor (thus enforcing the configured number of solid
-                        // layers, use different strategies according to configured infill density:
+                        // layers, use different strategies according to configured infill density:
                         if (region_config.fill_density.value == 0) {
                             // If user expects the object to be void (for example a hollow sloping vase),
                             // don't continue the search. In this case, we only generate the external solid
diff --git a/src/slic3r/GUI/BackgroundSlicingProcess.cpp b/src/slic3r/GUI/BackgroundSlicingProcess.cpp
index b77a272e2..94ddb1e5e 100644
--- a/src/slic3r/GUI/BackgroundSlicingProcess.cpp
+++ b/src/slic3r/GUI/BackgroundSlicingProcess.cpp
@@ -151,7 +151,12 @@ void BackgroundSlicingProcess::thread_proc()
 		} catch (CanceledException & /* ex */) {
 			// Canceled, this is all right.
 			assert(m_print->canceled());
-		} catch (std::exception &ex) {
+        } catch (const std::bad_alloc& ex) {
+            wxString errmsg = wxString::Format(_(L("%s has encountered an error. It was likely caused by running out of memory. "
+                                  "If you are sure you have enough RAM on your system, this may also be a bug and we would "
+                                  "be glad if you reported it.")), SLIC3R_APP_NAME);
+            error = errmsg.ToStdString() + "\n\n" + std::string(ex.what());
+        } catch (std::exception &ex) {
 			error = ex.what();
 		} catch (...) {
 			error = "Unknown C++ exception.";
diff --git a/src/slic3r/GUI/GUI_App.cpp b/src/slic3r/GUI/GUI_App.cpp
index 066dab90f..9b4522356 100644
--- a/src/slic3r/GUI/GUI_App.cpp
+++ b/src/slic3r/GUI/GUI_App.cpp
@@ -126,7 +126,16 @@ static void generic_exception_handle()
 
     try {
         throw;
-    } catch (const std::exception &ex) {
+    } catch (const std::bad_alloc& ex) {
+        // bad_alloc in main thread is most likely fatal. Report immediately to the user (wxLogError would be delayed)
+        // and terminate the app so it is at least certain to happen now.
+        wxString errmsg = wxString::Format(_(L("%s has encountered an error. It was likely caused by running out of memory. "
+                              "If you are sure you have enough RAM on your system, this may also be a bug and we would "
+                              "be glad if you reported it.\n\nThe application will now terminate.")), SLIC3R_APP_NAME);
+        wxMessageBox(errmsg + "\n\n" + wxString(ex.what()), _(L("Fatal error")), wxOK | wxICON_ERROR);
+        BOOST_LOG_TRIVIAL(error) << boost::format("std::bad_alloc exception: %1%") % ex.what();
+        std::terminate();
+    } catch (const std::exception& ex) {
         wxLogError("Internal error: %s", ex.what());
         BOOST_LOG_TRIVIAL(error) << boost::format("Uncaught exception: %1%") % ex.what();
         throw;