Fix crash when exiting Machine Settings

fixes #2609
This commit is contained in:
fieldOfView 2017-10-15 11:54:49 +02:00
parent c2515ca7a9
commit ad1c0046d9

View file

@ -79,7 +79,7 @@ class MachineSettingsAction(MachineAction):
@pyqtSlot()
def onFinishAction(self):
# Restore autoslicing when the machineaction is dismissed
if self._backend.determineAutoSlicing():
if self._backend and self._backend.determineAutoSlicing():
self._backend.tickle()
def _onActiveExtruderStackChanged(self):