diff --git a/cura/PrinterOutputDevice.py b/cura/PrinterOutputDevice.py
index bf013e4b9f..7a0a91068c 100644
--- a/cura/PrinterOutputDevice.py
+++ b/cura/PrinterOutputDevice.py
@@ -144,6 +144,9 @@ class PrinterOutputDevice(QObject, OutputDevice):
         return self._control_item
 
     def _createControlViewFromQML(self):
+        if not self._control_view_qml_path:
+            return
+
         path = QUrl.fromLocalFile(self._control_view_qml_path)
 
         # Because of garbage collection we need to keep this referenced by python.
diff --git a/plugins/UM3NetworkPrinting/MonitorItem.qml b/plugins/UM3NetworkPrinting/MonitorItem.qml
index d3803ea877..ffa2e8c85d 100644
--- a/plugins/UM3NetworkPrinting/MonitorItem.qml
+++ b/plugins/UM3NetworkPrinting/MonitorItem.qml
@@ -9,9 +9,20 @@ Component
     Image
     {
         id: cameraImage
-        width: sourceSize.width
-        height: sourceSize.height * width / sourceSize.width
+        property bool proportionalHeight:
+        {
+            if(sourceSize.height == 0 || maximumHeight == 0)
+            {
+                return true;
+            }
+            return (sourceSize.width / sourceSize.height) > (maximumWidth / maximumHeight);
+        }
+        property real _width: Math.min(maximumWidth, sourceSize.width)
+        property real _height: Math.min(maximumHeight, sourceSize.height)
+        width: proportionalHeight ? _width : sourceSize.width * _height / sourceSize.height
+        height: !proportionalHeight ? _height : sourceSize.height * _width / sourceSize.width
         anchors.horizontalCenter: parent.horizontalCenter
+
         onVisibleChanged:
         {
             if(visible)
diff --git a/resources/qml/Cura.qml b/resources/qml/Cura.qml
index 3aaf63a2fd..85b17e28a2 100755
--- a/resources/qml/Cura.qml
+++ b/resources/qml/Cura.qml
@@ -466,6 +466,9 @@ UM.MainWindow
                 anchors.horizontalCenter: parent.horizontalCenter
                 anchors.verticalCenter: parent.verticalCenter
                 anchors.horizontalCenterOffset: - UM.Theme.getSize("sidebar").width / 2
+                anchors.verticalCenterOffset: UM.Theme.getSize("sidebar_header").height / 2
+                property real maximumWidth: viewportOverlay.width
+                property real maximumHeight: viewportOverlay.height
             }
 
             UM.MessageStack