I was working on a Spring Roo project, and included my own aspect which included a "declare parents" line. When I added it & saved the file, STS abruptly died without warning. If I comment the "declare parents" line, STS is happy.
The Roo project persistence setup includes MSSQL & DATANUCLEUS_2.
I'll work on repro steps, but in the meantime, if there's some way to start STS in some kind of logging mode, I'd be happy to do that to help diagnose the problem. This is not yet a blocker for me, but it's close.
Maven 2.2.1 builds the project fine.
Note that I first saw the problem on STS 2.6.0.RELEASE, then updated to STS version 2.6.1.RELEASE. Bug is present in both versions.