When JetGroovy is installed, I can't Make the project. Attaching the only log message I get after I click Make, nothing special, but it stops from proceeding.
Now, the interesting part is that individual file compilation works, it's only the project make. Needless to say, it's a huge hassle, as JUnit tests will Make the project first (read - will never run).
I've tracked it down to a JetGroovy plugin. The moment I uninstall it - everything works fine, it's back and the problem is back.
Increasing the compiler heap setting doesn't seem to do anything here - I see it being passed to external compilation, but failing with the same error code in IDEA. Without JetGroovy everything works even with 128MB default setting.