I have updated to the new version of Jasper reports in the hope of eliminating my problem. No such luck however. Things work fine on Windows, but not so much on Unix. [echo] Java Version: 1.5 [echo] Ant Version: Apache Ant version 1.6.5 compiled on June 2 2005 net.sf.jasperreports.engine.JRRuntimeException: Error creating SAX parser I am attaching the complete classpath listing as a text attachment.