We have source trees with *.form *files made by some other IDE. Since IDEA-823 I could not build these trees anymore because it was trying to parse them as IDEA .form files, which fails.
I found a *work-around *(thought the list might like it):
- Goto "IDE Settings - File Types"
- Look for the "UI Designer form" entry
- Add an extension "form-ij"
- Remove the "form" extension.
This will solve the build problems. I can not get the form designer to work so I do not know if it has any impact there.