I inherited a project at work where the Swing GUI was designed using IntelliJ's GUI Designer. I have never worked with GUI Designer before, so this is a learning curve.
I know for sure that when I first was working on this project several days ago, that if I double clicked on its .form file that it would open up in a GUI builder layout window, which is exactly what I expect. I have not, to my knowledge, ever touched the GUI code in this project. But now, when I double click on that .form file, IntelliJ instantly totally crashes. Same crash happens if I right click on the .form file in IntelliJ and choose Jump to Source on the context menu or if I left click on the .form file to select it and press F4.
So, my first question is: how can I diagnose why IntelliJ is crashing? Does IntelliJ log an error somewhere? I tried searching my file system for files of the form *hs_err_pid* but that found nothing.
Second, concerning this particular crash...
As mentioned above, I do not think that I ever touched any of the GUI code or modified the .form file in any way. The .form file definitely exists on my hard drive, and SVN says that it is the exact same version as in the repository, which has not changed in a couple of years.
I recently updated to the latest IntelliJ community release, 2016.1.3. When double clicking on the .form file last worked, I think that I was using 2016.1.2. So, did 2016.1.3 break something in this regards? I searched the IntelliJ Issue Tracker, and did not find anything.
I have also tried invalidating my IntelliJ caches and restarting. No dice, opening the .form file still crashes IntelliJ.
I finally note that if I run this project, the actual GUI comes up perfectly fine, which also indicates that the actual .form file must be OK.
I am really puzzled why this is happening...