Unhandled exception popping up each time I open MC

  • Each time I open MC, a small window pops up saying "Unhandled exception has occurred in your application. If you click Continue, the application will ignore this error and attempt to continue. If you click Quit, the application will close immediately. Object reference not set to an instance of an object." This error happened when I imported a model of a car to slice. I ungrouped the model so I could separate the car body from the wheels, but after I clicked Continue MC just froze. Is there any way to work around this and get MC running again?

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