diff --git a/cura/CuraActions.py b/cura/CuraActions.py
index 49f7e740a9..91e0966fed 100644
--- a/cura/CuraActions.py
+++ b/cura/CuraActions.py
@@ -36,12 +36,12 @@ class CuraActions(QObject):
         # Starting a web browser from a signal handler connected to a menu will crash on windows.
         # So instead, defer the call to the next run of the event loop, since that does work.
         # Note that weirdly enough, only signal handlers that open a web browser fail like that.
-        event = CallFunctionEvent(self._openUrl, [QUrl("http://ultimaker.com/en/support/software")], {})
+        event = CallFunctionEvent(self._openUrl, [QUrl("https://ultimaker.com/en/resources/manuals/software")], {})
         cura.CuraApplication.CuraApplication.getInstance().functionEvent(event)
 
     @pyqtSlot()
     def openBugReportPage(self) -> None:
-        event = CallFunctionEvent(self._openUrl, [QUrl("http://github.com/Ultimaker/Cura/issues")], {})
+        event = CallFunctionEvent(self._openUrl, [QUrl("https://github.com/Ultimaker/Cura/issues")], {})
         cura.CuraApplication.CuraApplication.getInstance().functionEvent(event)
 
     ##  Reset camera position and direction to default
diff --git a/plugins/CuraEngineBackend/CuraEngineBackend.py b/plugins/CuraEngineBackend/CuraEngineBackend.py
index cf00035e3b..f12a5b1222 100755
--- a/plugins/CuraEngineBackend/CuraEngineBackend.py
+++ b/plugins/CuraEngineBackend/CuraEngineBackend.py
@@ -86,8 +86,8 @@ class CuraEngineBackend(QObject, Backend):
         self._layer_view_active = False #type: bool
         self._onActiveViewChanged()
 
-        self._stored_layer_data = [] #type: List[Arcus.PythonMessage]
-        self._stored_optimized_layer_data = {} #type: Dict[int, List[Arcus.PythonMessage]] # key is build plate number, then arrays are stored until they go to the ProcessSlicesLayersJob
+        self._stored_layer_data = []  # type: List[Arcus.PythonMessage]
+        self._stored_optimized_layer_data = {}  # type: Dict[int, List[Arcus.PythonMessage]] # key is build plate number, then arrays are stored until they go to the ProcessSlicesLayersJob
 
         self._scene = self._application.getController().getScene() #type: Scene
         self._scene.sceneChanged.connect(self._onSceneChanged)
@@ -246,7 +246,7 @@ class CuraEngineBackend(QObject, Backend):
         num_objects = self._numObjectsPerBuildPlate()
 
         self._stored_layer_data = []
-        self._stored_optimized_layer_data[build_plate_to_be_sliced] = []
+
 
         if build_plate_to_be_sliced not in num_objects or num_objects[build_plate_to_be_sliced] == 0:
             self._scene.gcode_dict[build_plate_to_be_sliced] = [] #type: ignore #Because we created this attribute above.
@@ -254,7 +254,7 @@ class CuraEngineBackend(QObject, Backend):
             if self._build_plates_to_be_sliced:
                 self.slice()
             return
-
+        self._stored_optimized_layer_data[build_plate_to_be_sliced] = []
         if self._application.getPrintInformation() and build_plate_to_be_sliced == active_build_plate:
             self._application.getPrintInformation().setToZeroPrintInformation(build_plate_to_be_sliced)
 
diff --git a/resources/qml/Menus/LocalPrinterMenu.qml b/resources/qml/Menus/LocalPrinterMenu.qml
index 0bdd4f33b9..e7c5037814 100644
--- a/resources/qml/Menus/LocalPrinterMenu.qml
+++ b/resources/qml/Menus/LocalPrinterMenu.qml
@@ -7,16 +7,18 @@ import QtQuick.Controls 1.4
 import UM 1.2 as UM
 import Cura 1.0 as Cura
 
-Instantiator {
-    model: UM.ContainerStacksModel {
-        filter: {"type": "machine", "um_network_key": null}
-    }
-    MenuItem {
-        text: model.name;
-        checkable: true;
+Instantiator
+{
+    model: Cura.PrintersModel {}
+
+    MenuItem
+    {
+        text: model.name
+        checkable: true
         checked: Cura.MachineManager.activeMachineId == model.id
-        exclusiveGroup: group;
-        onTriggered: Cura.MachineManager.setActiveMachine(model.id);
+        exclusiveGroup: group
+        visible: !model.hasRemoteConnection
+        onTriggered: Cura.MachineManager.setActiveMachine(model.id)
     }
     onObjectAdded: menu.insertItem(index, object)
     onObjectRemoved: menu.removeItem(object)
diff --git a/resources/qml/Menus/NetworkPrinterMenu.qml b/resources/qml/Menus/NetworkPrinterMenu.qml
index 166e45f3b9..8c607bc5ae 100644
--- a/resources/qml/Menus/NetworkPrinterMenu.qml
+++ b/resources/qml/Menus/NetworkPrinterMenu.qml
@@ -9,19 +9,15 @@ import Cura 1.0 as Cura
 
 Instantiator
 {
-    model: UM.ContainerStacksModel
-    {
-        filter: {"type": "machine", "um_network_key": "*", "hidden": "False"}
-    }
+    model: Cura.PrintersModel {}
     MenuItem
     {
-        // TODO: Use printer_group icon when it's a cluster. Not use it for now since it doesn't look as expected
-//        iconSource: UM.Theme.getIcon("printer_single")
         text: model.metadata["connect_group_name"]
-        checkable: true;
+        checkable: true
+        visible: model.hasRemoteConnection
         checked: Cura.MachineManager.activeMachineNetworkGroupName == model.metadata["connect_group_name"]
-        exclusiveGroup: group;
-        onTriggered: Cura.MachineManager.setActiveMachine(model.id);
+        exclusiveGroup: group
+        onTriggered: Cura.MachineManager.setActiveMachine(model.id)
     }
     onObjectAdded: menu.insertItem(index, object)
     onObjectRemoved: menu.removeItem(object)