diff --git a/cura/Settings/GlobalStack.py b/cura/Settings/GlobalStack.py
index b00ff1a1f1..c09889c9c5 100755
--- a/cura/Settings/GlobalStack.py
+++ b/cura/Settings/GlobalStack.py
@@ -67,10 +67,6 @@ class GlobalStack(CuraContainerStack):
                        extruder.id, self.id)
             return
 
-        if extruder_count and len(self._extruders) + 1 > extruder_count:
-            Logger.log("w", "Adding extruder {meta} to {id} but its extruder count is {count}".format(id = self.id, count = extruder_count, meta = str(extruder.getMetaData())))
-            return
-
         position = extruder.getMetaDataEntry("position")
         if position is None:
             Logger.log("w", "No position defined for extruder {extruder}, cannot add it to stack {stack}", extruder = extruder.id, stack = self.id)
diff --git a/plugins/PerObjectSettingsTool/PerObjectSettingsPanel.qml b/plugins/PerObjectSettingsTool/PerObjectSettingsPanel.qml
index a306dd1540..c30c6c8d6a 100644
--- a/plugins/PerObjectSettingsTool/PerObjectSettingsPanel.qml
+++ b/plugins/PerObjectSettingsTool/PerObjectSettingsPanel.qml
@@ -1,4 +1,4 @@
-// Copyright (c) 2016 Ultimaker B.V.
+// Copyright (c) 2017 Ultimaker B.V.
 // Uranium is released under the terms of the AGPLv3 or higher.
 
 import QtQuick 2.2
@@ -38,6 +38,7 @@ Item {
                 height: parent.height
                 width: UM.Theme.getSize("setting").width + UM.Theme.getSize("setting").height
                 style: UM.Theme.styles.scrollview
+
                 ListView
                 {
                     id: contents
@@ -66,6 +67,7 @@ Item {
                             property var definition: model
                             property var settingDefinitionsModel: addedSettingsModel
                             property var propertyProvider: provider
+                            property var globalPropertyProvider: inheritStackProvider
 
                             //Qt5.4.2 and earlier has a bug where this causes a crash: https://bugreports.qt.io/browse/QTBUG-35989
                             //In addition, while it works for 5.5 and higher, the ordering of the actual combo box drop down changes,
@@ -143,6 +145,16 @@ Item {
                             storeIndex: 0
                             removeUnusedValue: false
                         }
+
+                        // Specialty provider that only watches global_inherits (we cant filter on what property changed we get events
+                        // so we bypass that to make a dedicated provider).
+                        UM.SettingPropertyProvider
+                        {
+                            id: inheritStackProvider
+                            containerStackId: Cura.MachineManager.activeMachineId
+                            key: model.key
+                            watchedProperties: [ "limit_to_extruder" ]
+                        }
                     }
                 }
             }
diff --git a/plugins/SliceInfoPlugin/SliceInfo.py b/plugins/SliceInfoPlugin/SliceInfo.py
index 8269b92ab5..30b664ed63 100755
--- a/plugins/SliceInfoPlugin/SliceInfo.py
+++ b/plugins/SliceInfoPlugin/SliceInfo.py
@@ -69,7 +69,15 @@ class SliceInfo(Extension):
             else:
                 data["active_mode"] = "custom"
 
-            data["machine_settings_changed_by_user"] = global_container_stack.definitionChanges.getId() != "empty"
+            definition_changes = global_container_stack.definitionChanges
+            machine_settings_changed_by_user = False
+            if definition_changes.getId() != "empty":
+                # Now a definition_changes container will always be created for a stack,
+                # so we also need to check if there is any instance in the definition_changes container
+                if definition_changes.getAllKeys():
+                    machine_settings_changed_by_user = True
+
+            data["machine_settings_changed_by_user"] = machine_settings_changed_by_user
             data["language"] = Preferences.getInstance().getValue("general/language")
             data["os"] = {"type": platform.system(), "version": platform.version()}
 
diff --git a/plugins/VersionUpgrade/VersionUpgrade26to27/__init__.py b/plugins/VersionUpgrade/VersionUpgrade26to27/__init__.py
index c309142c8f..f016914b93 100644
--- a/plugins/VersionUpgrade/VersionUpgrade26to27/__init__.py
+++ b/plugins/VersionUpgrade/VersionUpgrade26to27/__init__.py
@@ -29,6 +29,7 @@ def getMetaData():
             ("user", 2000001):                  ("user", 2000002,               upgrade.upgradeOtherContainer),
             ("quality", 2000001):               ("quality", 2000002,            upgrade.upgradeOtherContainer),
             ("definition_changes", 2000001):    ("definition_changes", 2000002, upgrade.upgradeOtherContainer),
+            ("variant", 2000000):               ("variant", 2000002,            upgrade.upgradeOtherContainer)
         },
         "sources": {
             "machine_stack": {
@@ -54,6 +55,10 @@ def getMetaData():
             "definition_changes": {
                 "get_version": upgrade.getCfgVersion,
                 "location": {"./definition_changes"}
+            },
+            "variant": {
+                "get_version": upgrade.getCfgVersion,
+                "location": {"./variants"}
             }
         }
     }
diff --git a/resources/qml/WorkspaceSummaryDialog.qml b/resources/qml/WorkspaceSummaryDialog.qml
index 5f8b7cce51..5596d9c735 100644
--- a/resources/qml/WorkspaceSummaryDialog.qml
+++ b/resources/qml/WorkspaceSummaryDialog.qml
@@ -230,11 +230,11 @@ UM.Dialog
             }
         }
 
-
         CheckBox
         {
             id: dontShowAgainCheckbox
-            anchors.bottom: parent.bottom
+            anchors.bottom: cancel_button.top
+            anchors.bottomMargin: UM.Theme.getSize("default_margin").height
             anchors.left: parent.left
 
             text: catalog.i18nc("@action:label", "Don't show project summary on save again")