Scala plugin can't coexist with our RDz development environment.
We are using Rational Developer for System z (v. 8.0.3.1) which is based on eclipse 3.6 Helios, my version is also shell sharing with Rational Business developer (EGL development).
Also I should mention, that we are running on the IBM JVM, since RDz doesn't support Oracle JVM.

The installation goes fine, however afterwards during restart I get a number of errors depending if I'm using. I have tried both nightly and current final version.
When restarting after the installation I get the attached errors.

I seems to be related to the aspectj and weaving stuff.
If you need anymore please let me know. I see this as a rather important fix, since this can affect adoption in my organisation.