Please submit a bug report and attach the project. https://www.adobe.com/cfusion/mmform/index.cfm?name=wishform. And note in the bug report "attn. Mark Mapes."
The layout of the workspace is saved with each project, and it sounds like there's something about the layout specified in this project that PPRO apparently doesn't like.
Was this a project created in CS6 or earlier? Do you create and use custom workspaces and, if so, do you know if you had one applied in the problematic project?
After you send Mark the report, create a new project. Go to Window>Workspace and uncheck Import Workspace from Projects.
I'm having the same issue with a different project now, I've worked on it for days, I came back after the weekend tried to open the project and it will not launch, displays the same issues that I had with the previous project I've worked on that I could never reopen again.
The answer to your questions:
I do not create any specific custom work spaces for projects, I just work with the defaults window arrangement. I'm starting to suspect that this issue might be linked to Magic bullet looks, as it launches its on interface once you apply that effect. I have submmited a number of crash reports after the app crashes, I don't know how to send you a copy of that report via this string or email.
I've appreciate your help hopefully we can get to what is causing this problem.