In Eclipse(version 3.6.2.M201102101200/Helios service release 2). I am getting a strange error when I run a large Java project called ACE toolkit. Below is a picture:

What are possible reasons it would do this?
can it be that Java runtime version is incompatible? The project was built for Java 1.5, but I have 1.6 running.
I appreciate any tips or advice.
There could be any number of reasons for eclipse crashing, from insufficient memory to a misbehaving plugin. The first place to start troubleshooting would be the
C:\path\to\your\workspace\.metadata\.logfile. You might find something helpful if you examine the end of this file soon after eclipse crashes.From the documentation: