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Fix KeyError in root material ID check

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CURA-6827
This commit is contained in:
Lipu Fei 2019-10-01 11:58:52 +02:00
parent 51c96aecde
commit aaca4bb9a1
1 changed files with 1 additions and 1 deletions
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2
cura/Settings/MachineManager.py
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@ -1246,7 +1246,7 @@ class MachineManager(QObject):
self._global_container_stack.extruderList[int(position)].material = empty_material_container
root_material_id = None
# The _current_root_material_id is used in the MaterialMenu to see which material is selected
if root_material_id != self._current_root_material_id[position]:
if position not in self._current_root_material_id or root_material_id != self._current_root_material_id[position]:
self._current_root_material_id[position] = root_material_id
self.rootMaterialChanged.emit()