diff --git a/cura/CrashHandler.py b/cura/CrashHandler.py
index e86e407902..366bc01b15 100644
--- a/cura/CrashHandler.py
+++ b/cura/CrashHandler.py
@@ -2,9 +2,11 @@ import sys
 import platform
 import traceback
 import webbrowser
+import urllib
 
-from PyQt5.QtCore import QT_VERSION_STR, PYQT_VERSION_STR, QCoreApplication
-from PyQt5.QtWidgets import QDialog, QDialogButtonBox, QVBoxLayout, QLabel, QTextEdit
+from PyQt5.QtCore import QT_VERSION_STR, PYQT_VERSION_STR, Qt, QCoreApplication
+from PyQt5.QtGui import QPixmap
+from PyQt5.QtWidgets import QDialog, QDialogButtonBox, QHBoxLayout, QVBoxLayout, QLabel, QTextEdit
 
 from UM.Logger import Logger
 from UM.i18n import i18nCatalog
@@ -22,9 +24,7 @@ fatal_exception_types = [
 ]
 
 def show(exception_type, value, tb):
-    debug_mode = False
-    if QCoreApplication.instance():
-        debug_mode = QCoreApplication.instance().getCommandLineOption("debug-mode", False)
+    debug_mode = True
 
     Logger.log("c", "An uncaught exception has occurred!")
     for line in traceback.format_exception(exception_type, value, tb):
@@ -38,14 +38,42 @@ def show(exception_type, value, tb):
     if not application:
         sys.exit(1)
 
+
     dialog = QDialog()
+    dialog.setMinimumWidth(640)
+    dialog.setMinimumHeight(640)
     dialog.setWindowTitle(catalog.i18nc("@title:window", "Oops!"))
 
     layout = QVBoxLayout(dialog)
 
     label = QLabel(dialog)
+    pixmap = QPixmap()
+
+    try:
+        data = urllib.request.urlopen("http://www.randomkittengenerator.com/cats/rotator.php").read()
+        pixmap.loadFromData(data)
+    except:
+        try:
+            from UM.Resources import Resources
+            path = Resources.getPath(Resources.Images, "kitten.jpg")
+            pixmap.load(path)
+        except:
+            pass
+
+    pixmap = pixmap.scaled(150, 150)
+    label.setPixmap(pixmap)
+    label.setAlignment(Qt.AlignCenter)
     layout.addWidget(label)
-    label.setText(catalog.i18nc("@label", "<p>A fatal exception has occurred that we could not recover from!</p><p>Please use the information below to post a bug report at <a href=\"http://github.com/Ultimaker/Cura/issues\">http://github.com/Ultimaker/Cura/issues</a></p>"))
+
+    label = QLabel(dialog)
+    layout.addWidget(label)
+
+    #label.setScaledContents(True)
+    label.setText(catalog.i18nc("@label", """
+        <p>A fatal exception has occurred that we could not recover from!</p>
+        <p>We hope this picture of a kitten helps you recover from the shock.</p>
+        <p>Please use the information below to post a bug report at <a href=\"http://github.com/Ultimaker/Cura/issues\">http://github.com/Ultimaker/Cura/issues</a></p>
+    """))
 
     textarea = QTextEdit(dialog)
     layout.addWidget(textarea)
diff --git a/cura/CuraApplication.py b/cura/CuraApplication.py
index 4753955337..bd0a86d4af 100644
--- a/cura/CuraApplication.py
+++ b/cura/CuraApplication.py
@@ -407,7 +407,6 @@ class CuraApplication(QtApplication):
     def addCommandLineOptions(self, parser):
         super().addCommandLineOptions(parser)
         parser.add_argument("file", nargs="*", help="Files to load after starting the application.")
-        parser.add_argument("--debug", dest="debug-mode", action="store_true", default=False, help="Enable detailed crash reports.")
 
     def run(self):
         self.showSplashMessage(self._i18n_catalog.i18nc("@info:progress", "Setting up scene..."))
diff --git a/plugins/PerObjectSettingsTool/PerObjectSettingsPanel.qml b/plugins/PerObjectSettingsTool/PerObjectSettingsPanel.qml
index 82512dd1e6..c7eed579e2 100644
--- a/plugins/PerObjectSettingsTool/PerObjectSettingsPanel.qml
+++ b/plugins/PerObjectSettingsTool/PerObjectSettingsPanel.qml
@@ -351,7 +351,7 @@ Item {
             {
                 if(text != "")
                 {
-                    listview.model.filter = {"settable_per_mesh": true, "label": "*" + text}
+                    listview.model.filter = {"settable_per_mesh": true, "i18n_label": "*" + text}
                 }
                 else
                 {
diff --git a/plugins/UM3NetworkPrinting/NetworkPrinterOutputDevice.py b/plugins/UM3NetworkPrinting/NetworkPrinterOutputDevice.py
index 19692492e4..66a07c9458 100644
--- a/plugins/UM3NetworkPrinting/NetworkPrinterOutputDevice.py
+++ b/plugins/UM3NetworkPrinting/NetworkPrinterOutputDevice.py
@@ -1018,9 +1018,9 @@ class NetworkPrinterOutputDevice(PrinterOutputDevice):
     def materialHotendChangedMessage(self, callback):
         Application.getInstance().messageBox(i18n_catalog.i18nc("@window:title", "Changes on the Printer"),
             i18n_catalog.i18nc("@label",
-                "Would you like to update your current printer configuration into Cura?"),
+                "Would you like to use your current printer configuration in Cura?"),
             i18n_catalog.i18nc("@label",
-                "The PrintCores and/or materials on your printer were changed. For the best result, always slice for the PrintCores and materials that are inserted in your printer."),
+                "The PrintCores and/or materials on your printer differ from those within your current project. For the best result, always slice for the PrintCores and materials that are inserted in your printer."),
             buttons=QMessageBox.Yes + QMessageBox.No,
             icon=QMessageBox.Question,
             callback=callback
diff --git a/plugins/VersionUpgrade/VersionUpgrade22to24/VersionUpgrade.py b/plugins/VersionUpgrade/VersionUpgrade22to24/VersionUpgrade.py
index 28df74b499..dce2b311bb 100644
--- a/plugins/VersionUpgrade/VersionUpgrade22to24/VersionUpgrade.py
+++ b/plugins/VersionUpgrade/VersionUpgrade22to24/VersionUpgrade.py
@@ -2,6 +2,7 @@
 # Cura is released under the terms of the AGPLv3 or higher.
 
 import configparser #To get version numbers from config files.
+import os
 import os.path
 import io
 
diff --git a/resources/images/kitten.jpg b/resources/images/kitten.jpg
new file mode 100644
index 0000000000..1c736a7113
Binary files /dev/null and b/resources/images/kitten.jpg differ
diff --git a/resources/qml/Preferences/MaterialsPage.qml b/resources/qml/Preferences/MaterialsPage.qml
index 83f980bf86..70e3780707 100644
--- a/resources/qml/Preferences/MaterialsPage.qml
+++ b/resources/qml/Preferences/MaterialsPage.qml
@@ -127,7 +127,7 @@ UM.ManagementPage
         {
             text: catalog.i18nc("@action:button", "Activate");
             iconName: "list-activate";
-            enabled: base.currentItem != null && base.currentItem.id != Cura.MachineManager.activeMaterialId
+            enabled: base.currentItem != null && base.currentItem.id != Cura.MachineManager.activeMaterialId && Cura.MachineManager.hasMaterials
             onClicked: Cura.MachineManager.setActiveMaterial(base.currentItem.id)
         },
         Button
@@ -144,8 +144,10 @@ UM.ManagementPage
                 {
                     return
                 }
-
-                Cura.MachineManager.setActiveMaterial(material_id)
+                if(Cura.MachineManager.hasMaterials)
+                {
+                    Cura.MachineManager.setActiveMaterial(material_id)
+                }
             }
         },
         Button
diff --git a/resources/qml/Preferences/SettingVisibilityPage.qml b/resources/qml/Preferences/SettingVisibilityPage.qml
index 282f366994..4302fb42a8 100644
--- a/resources/qml/Preferences/SettingVisibilityPage.qml
+++ b/resources/qml/Preferences/SettingVisibilityPage.qml
@@ -90,7 +90,7 @@ UM.PreferencesPage
 
             placeholderText: catalog.i18nc("@label:textbox", "Filter...")
 
-            onTextChanged: definitionsModel.filter = {"label": "*" + text}
+            onTextChanged: definitionsModel.filter = {"i18n_label": "*" + text}
         }
 
         ScrollView
diff --git a/resources/quality/ultimaker3/um3_aa0.4_Nylon_Draft_Print.inst.cfg b/resources/quality/ultimaker3/um3_aa0.4_Nylon_Draft_Print.inst.cfg
index 348eee17c8..6899989100 100644
--- a/resources/quality/ultimaker3/um3_aa0.4_Nylon_Draft_Print.inst.cfg
+++ b/resources/quality/ultimaker3/um3_aa0.4_Nylon_Draft_Print.inst.cfg
@@ -16,6 +16,8 @@ cool_min_speed = 10
 infill_line_width = =round(line_width * 0.5 / 0.4, 2)
 line_width = =machine_nozzle_size
 material_print_temperature = =default_material_print_temperature + 10
+material_initial_print_temperature = =material_print_temperature - 5
+material_final_print_temperature = =material_print_temperature - 10
 material_standby_temperature = 100
 ooze_shield_angle = 40
 prime_tower_enable = False
diff --git a/resources/quality/ultimaker3/um3_aa0.4_Nylon_Fast_Print.inst.cfg b/resources/quality/ultimaker3/um3_aa0.4_Nylon_Fast_Print.inst.cfg
index 348f3f5dc1..76a2491079 100644
--- a/resources/quality/ultimaker3/um3_aa0.4_Nylon_Fast_Print.inst.cfg
+++ b/resources/quality/ultimaker3/um3_aa0.4_Nylon_Fast_Print.inst.cfg
@@ -16,6 +16,8 @@ cool_min_speed = 10
 infill_line_width = =round(line_width * 0.5 / 0.4, 2)
 line_width = =machine_nozzle_size
 material_print_temperature = =default_material_print_temperature + 5
+material_initial_print_temperature = =material_print_temperature - 5
+material_final_print_temperature = =material_print_temperature - 10
 material_standby_temperature = 100
 ooze_shield_angle = 40
 prime_tower_enable = False
diff --git a/resources/quality/ultimaker3/um3_aa0.4_Nylon_High_Quality.inst.cfg b/resources/quality/ultimaker3/um3_aa0.4_Nylon_High_Quality.inst.cfg
index 5253bd5fdf..ba50bc4d31 100644
--- a/resources/quality/ultimaker3/um3_aa0.4_Nylon_High_Quality.inst.cfg
+++ b/resources/quality/ultimaker3/um3_aa0.4_Nylon_High_Quality.inst.cfg
@@ -15,6 +15,8 @@ cool_min_layer_time_fan_speed_max = 20
 cool_min_speed = 15
 infill_line_width = =round(line_width * 0.5 / 0.4, 2)
 line_width = =machine_nozzle_size
+material_initial_print_temperature = =material_print_temperature - 5
+material_final_print_temperature = =material_print_temperature - 10
 material_standby_temperature = 100
 ooze_shield_angle = 40
 prime_tower_enable = False
diff --git a/resources/quality/ultimaker3/um3_aa0.4_Nylon_Normal_Quality.inst.cfg b/resources/quality/ultimaker3/um3_aa0.4_Nylon_Normal_Quality.inst.cfg
index 8f9abd896e..bebd9976f5 100644
--- a/resources/quality/ultimaker3/um3_aa0.4_Nylon_Normal_Quality.inst.cfg
+++ b/resources/quality/ultimaker3/um3_aa0.4_Nylon_Normal_Quality.inst.cfg
@@ -15,6 +15,8 @@ cool_min_layer_time_fan_speed_max = 20
 cool_min_speed = 12
 infill_line_width = =round(line_width * 0.5 / 0.4, 2)
 line_width = =machine_nozzle_size
+material_initial_print_temperature = =material_print_temperature - 5
+material_final_print_temperature = =material_print_temperature - 10
 material_standby_temperature = 100
 ooze_shield_angle = 40
 prime_tower_enable = False