Jar library crashes Domino Server runs on Notes Clients

I have a jar library called by LS based agents/actions/libraries, till 7.0.3 everything was fine,

From7.0.4, the java code in jar files runs ok on ALL client versions but crashes all servers when called by LS based agent as a WQO agent.

It is compiled with 1.4.2 jre, in the last iteration I also copied the java folder from the Domino server and added it to the compile settings in Eclipse 3.3.

Any Ideas?

Thanx

[Posted on 6/7 forum too]

http://www-10.lotus.com/ldd/nd6forum.nsf/DateAllThreadedweb/6bc1cbf57f5b2112852576d50073ce68?OpenDocument

Subject: Try compiling for Java5

Compile it in Java5 and see if that works. If not then post the crash stack.