diff --git a/cura/ExtruderManager.py b/cura/ExtruderManager.py
index b35243df05..aae90afdc5 100644
--- a/cura/ExtruderManager.py
+++ b/cura/ExtruderManager.py
@@ -6,6 +6,7 @@ from PyQt5.QtCore import pyqtSignal, pyqtProperty, pyqtSlot, QObject #For commun
 import UM.Application #To get the global container stack to find the current machine.
 import UM.Logger
 import UM.Settings.ContainerRegistry #Finding containers by ID.
+import re
 
 
 ##  Manages all existing extruder stacks.
@@ -48,6 +49,13 @@ class ExtruderManager(QObject):
         except KeyError: #Extruder index could be -1 if the global tab is selected, or the entry doesn't exist if the machine definition is wrong.
             return None
 
+    __instance = None
+    @classmethod
+    def getInstance(cls):
+        if not cls.__instance:
+            cls.__instance = ExtruderManager()
+        return cls.__instance
+
     @pyqtSlot(int)
     def setActiveExtruderIndex(self, index):
         self._active_extruder_index = index
@@ -135,5 +143,25 @@ class ExtruderManager(QObject):
 
         container_registry.addContainer(container_stack)
 
+
+    def _uniqueName(self, extruder):
+        container_registry = UM.Settings.ContainerRegistry.getInstance()
+
+        name = extruder.strip()
+        num_check = re.compile("(.*?)\s*#\d$").match(name)
+        if num_check:  # There is a number in the name.
+            name = num_check.group(1)  # Filter out the number.
+        if name == "":  # Wait, that deleted everything!
+            name = "Extruder"
+        unique_name = name
+
+        i = 1
+        while container_registry.findContainers(id=unique_name) or container_registry.findContainers(
+                name=unique_name):  # A container already has this name.
+            i += 1  # Try next numbering.
+            unique_name = "%s #%d" % (name, i)  # Fill name like this: "Extruder #2".
+        return unique_name
+
+
 def createExtruderManager(engine, script_engine):
     return ExtruderManager()
\ No newline at end of file
diff --git a/cura/MachineManagerModel.py b/cura/MachineManagerModel.py
index 6e0e0a6127..576cf1acc0 100644
--- a/cura/MachineManagerModel.py
+++ b/cura/MachineManagerModel.py
@@ -135,14 +135,14 @@ class MachineManagerModel(QObject):
                 new_global_stack.addContainer(quality_instance_container)
             new_global_stack.addContainer(current_settings_instance_container)
 
-            for position, extruder_train_id in definitions.getMetaDataEntry("machine_extruder_trains", default = {}).items():
+            for position, extruder_train_id in definition.getMetaDataEntry("machine_extruder_trains", default = {}).items():
                 extruder_definition = UM.Settings.ContainerRegistry.getInstance().findDefinitionContainers(id = extruder_train_id)
                 if extruder_definition:
                     extruder_definition = extruder_definition[0]
                 else:
                     Logger.log("w", "Machine %s references an extruder with ID %s, which doesn't exist.", definition.getName(), extruder_train_id)
                     continue
-                ExtruderManager.getInstance().createExtruderTrain(extruder_definition, definition, extruder_train_id)
+                ExtruderManager.ExtruderManager.getInstance().createExtruderTrain(extruder_definition, definition, extruder_train_id)
 
             Application.getInstance().setGlobalContainerStack(new_global_stack)
 
diff --git a/resources/qml/Settings/SettingView.qml b/resources/qml/Settings/SettingView.qml
index ed66661a8e..7191bff3ef 100644
--- a/resources/qml/Settings/SettingView.qml
+++ b/resources/qml/Settings/SettingView.qml
@@ -24,7 +24,7 @@ ScrollView
     {
         id: contents
         spacing: UM.Theme.getSize("default_lining").height;
-        cacheBuffer: 1000000;   // A huge to cache to effectively cache everything.
+        cacheBuffer: 1000000;   // Set a large cache to effectively just cache every list item.
 
         model: UM.SettingDefinitionsModel {
             id: definitionsModel;