Hi Katherine,   Please see below for an example of the answer that I got from Adobe Customer Support when I had a similar problem.   1. With FrameMaker closed, go to C:\Users\zornitzadoneva\AppData\ 2. In View, add a check mark to Hidden Items to see them. 3. Go to C:\Users\yourname\AppData\Roaming\Adobe\FrameMaker 4. Rename folder 16 to 16_old or else. 5 Restart FrameMaker and try to open a the files that were crushing during opening). It should be successful because FM has returned to the initial settings.   I hope this helps.   Regards, Zornitza Doneva ... View more