I have a similar problem, that i solve by removing xercesImpl.jar from the java class path in some Java test You can try to remove xercesImpl.jar from directory [install_dir] ireport modules ext (move the file in a temp directory to test) For information, it seems that the problem come from concurence betwin the xercesImpl.jar and the intgrated JRE implementation of xerces impl in JRE 1.4 and more. Say if it works ;) Edit A second solution is to add xercesImpl.jar to the JRE (copy xercesImpl.jar to [JRE_INSTALL_DIR] lib ext directory) Post Edited by JOLL Ar at 01/27/09 16:08 Post Edited by JOLL Ar at 01/27/09 16:08