Ok, so your environment is like mine :-) ... Remember to edit the definition of the JDK in eclipse to add other jars (required to compile some classes), as explained here: https://cwiki.apache.org/confluence/display/PIVOT/Platform+Developer+Info
I think that for the future we could try to remove these, or better constraint these additions to specific (optional) modules ... Otherwise you could build Pivot sources (for example our source distribution) from Ant and generate related jars, and then use al libraries in other projects ("normal" eclipse projects, or maven for example). In this case you need JUnit jar in CLASSPATH. Tell me after these steps if you still have the problem. Bye, Sandro