diff --git a/cura/LayerPolygon.py b/cura/LayerPolygon.py
index 67b665eb4c..c5eb4b699e 100644
--- a/cura/LayerPolygon.py
+++ b/cura/LayerPolygon.py
@@ -16,7 +16,7 @@ class LayerPolygon:
     MoveRetractionType = 9
     SupportInterfaceType = 10
     
-    __jump_map = numpy.logical_or( numpy.arange(10) == NoneType, numpy.arange(10) >= MoveCombingType )
+    __jump_map = numpy.logical_or( numpy.arange(11) == NoneType, numpy.arange(11) >= MoveRetractionType )
     
     def __init__(self, mesh, extruder, line_types, data, line_widths):
         self._mesh = mesh
diff --git a/cura/Settings/MachineManager.py b/cura/Settings/MachineManager.py
index bf82a95f1a..3e6b55ec7e 100644
--- a/cura/Settings/MachineManager.py
+++ b/cura/Settings/MachineManager.py
@@ -890,7 +890,7 @@ class MachineManager(QObject):
                 return containers[0]
 
         # Notify user that we were unable to find a matching quality
-        message = Message(catalog.i18nc("@info:status", "Unable to find a quality profile for this combination, using an empty one instead."))
+        message = Message(catalog.i18nc("@info:status", "Unable to find a quality profile for this combination. Default settings will be used instead."))
         message.show()
         return self._empty_quality_container
 
diff --git a/plugins/CuraEngineBackend/CuraEngineBackend.py b/plugins/CuraEngineBackend/CuraEngineBackend.py
index 9e6bec45e4..72884ce5a5 100644
--- a/plugins/CuraEngineBackend/CuraEngineBackend.py
+++ b/plugins/CuraEngineBackend/CuraEngineBackend.py
@@ -229,7 +229,7 @@ class CuraEngineBackend(Backend):
 
         if job.getResult() == StartSliceJob.StartJobResult.SettingError:
             if Application.getInstance().getPlatformActivity:
-                self._error_message = Message(catalog.i18nc("@info:status", "Unable to slice. Please check your setting values for errors."))
+                self._error_message = Message(catalog.i18nc("@info:status", "Unable to slice with the current settings. Please check your settings for errors."))
                 self._error_message.show()
                 self.backendStateChange.emit(BackendState.Error)
             else:
@@ -238,7 +238,7 @@ class CuraEngineBackend(Backend):
 
         if job.getResult() == StartSliceJob.StartJobResult.NothingToSlice:
             if Application.getInstance().getPlatformActivity:
-                self._error_message = Message(catalog.i18nc("@info:status", "Unable to slice. No suitable models found."))
+                self._error_message = Message(catalog.i18nc("@info:status", "Nothing to slice because none of the models fit the build volume. Please scale or rotate models to fit."))
                 self._error_message.show()
                 self.backendStateChange.emit(BackendState.Error)
             else:
diff --git a/resources/qml/Cura.qml b/resources/qml/Cura.qml
index 34dbcf1b67..42c2ad9cf4 100644
--- a/resources/qml/Cura.qml
+++ b/resources/qml/Cura.qml
@@ -346,6 +346,7 @@ UM.MainWindow
                     bottom: parent.bottom;
                     right: parent.right;
                 }
+                z: 1
                 onMonitoringPrintChanged: base.monitoringPrint = monitoringPrint
                 width: UM.Theme.getSize("sidebar").width;
             }