[java-dev] code working on intel-macs but not on ppc-macs

hi guys,
first of all, excuse my bad english. it's not my native language.

Well,
im a college student, working with some friends on a project to move sound around in space.
the software has to work on both, ppc-macs and intel-macs running on mac osx 10.4.9 and max/msp 4.6.3.
Currently running on the jvm 1.5.07.

Like the title explains, our code is working properly on intel-macs but creates the "Beachball of Death" if our application is running on an ppc-mac. Absolutely no error-message appears if our error_logging is ON. But if its OFF the patch appears but the console says: could not instantiate s2m_main_GridEditor (the main class of the application) and nothing happens

We then thought of some memory-issues and configured the java_config of max/msp to load it once with 128, once with 256, and once with 512 mb use of memory. but everytime the same problem.

BUT: if we start our application inside eclipse (ppc-mac) it's running great, as it does on intel-macs inside max/msp

you guys are our last chance to get it running. any suggestions?
thanks in advance