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Prevent race condition before global container stack is made

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Just properly check if there is a global container stack.
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Ghostkeeper 2016-10-26 09:50:42 +02:00
parent 861837ef41
commit 6c3b4b7f29
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2
cura/Settings/MachineManager.py
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@ -769,6 +769,8 @@ class MachineManager(QObject):
result = []
empty_quality_changes = self._empty_quality_changes_container
global_container_stack = self._global_container_stack
if not global_container_stack:
return []
global_machine_definition = quality_manager.getParentMachineDefinition(global_container_stack.getBottom())
extruder_stacks = ExtruderManager.getInstance().getActiveExtruderStacks()