Use the right resource path for locating Qml resources

cura/CuraApplication.py

@@ -40,6 +40,7 @@ from . import MultiMaterialDecorator
 
 from PyQt5.QtCore import pyqtSlot, QUrl, Qt, pyqtSignal, pyqtProperty, QEvent, Q_ENUMS
 from PyQt5.QtGui import QColor, QIcon
+from PyQt5.QtQml import qmlRegisterUncreatableType
 
 import platform
 import sys
@@ -206,6 +207,8 @@ class CuraApplication(QtApplication):
         self._cura_actions = CuraActions.CuraActions(self)
         engine.rootContext().setContextProperty("CuraActions", self._cura_actions)
 
+        qmlRegisterUncreatableType(CuraApplication, "Cura", 1, 0, "ResourceTypes", "Just an Enum type")
+
     def onSelectionChanged(self):
         if Selection.hasSelection():
             if not self.getController().getActiveTool():

resources/qml/AddMachineWizard.qml

@@ -7,6 +7,7 @@ import QtQuick.Layouts 1.1
 import QtQuick.Window 2.1
 
 import UM 1.0 as UM
+import Cura 1.0 as Cura
 
 UM.Wizard
 {
@@ -15,7 +16,7 @@ UM.Wizard
     wizardPages: [
         {
             title: "Add Printer",
-            page: "AddMachine.qml"
+            page: UM.Resources.getPath(Cura.ResourceTypes.QmlFiles, "WizardPages/AddMachine.qml")
         }
     ]