MATLAB should never crash; regardless. If this happens, send the crash report to Mathworks Support.
About all you can try yourself for something such as this is to try to refresh the install with any updates/patches that you may not have done that might be available since the initial installation. If that doesn't solve the problem, you're pretty much at the point of trying to fix something in the file to see if you can make a working model out of what you have or start over and try to rebuild it in parts, testing along the way.
