Hi Jörg. >C:\g2gui>g2gui.exe >Exception in thread "main" org.eclipse.swt.SWTException: Unsupported or >unrecognized format See this thread: http://gcc.gnu.org/ml/java/2003-07/msg00260.html Let me know if it helps. -- Mohan http://www.thisiscool.com/ http://www.animalsong.org/