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Fix KeyError in root material ID check
CURA-6827
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1 changed files with 1 additions and 1 deletions
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@ -1246,7 +1246,7 @@ class MachineManager(QObject):
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self._global_container_stack.extruderList[int(position)].material = empty_material_container
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root_material_id = None
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# The _current_root_material_id is used in the MaterialMenu to see which material is selected
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if root_material_id != self._current_root_material_id[position]:
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if position not in self._current_root_material_id or root_material_id != self._current_root_material_id[position]:
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self._current_root_material_id[position] = root_material_id
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self.rootMaterialChanged.emit()
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