Richard Doust schrieb: > > have tried replacing the older ones with the newer ones because my code Hi Richard, to me it seems that what You do makes perfect sense and that Orion *must not* impose any restriction on which libraries/versions You are going to use in your EJB code. That Orion uses Xalan etc. internally should be a hidden implementation detail (one may make use of ;-)). Therefore, I guess that your code should work just ok if you package all your additional JAR-files into your ejb-jar file. Just don't replace Orion's own files. You are just not allowed to. If it still does *not* work, file a bug report to bugzilla at orionserver.com. Most application servers I know run a separate class loader for at least each deployed application. If it works it would be nice to see documented an application-local library path so that repacking is not needed every time. Hope I could help. Your problem seems to be of a general nature. Bye, Falk -- Dr. Falk Langhammer Living Pages Research GmbH Holzstr. 19 D-80469 Munich, Germany mailto:[EMAIL PROTECTED] http://www.living-pages.de Phone +49 (89) 260 255 32 Fax +49 (89) 260 255 35 Mobil +49 (171) 79 39 667 mailto:[EMAIL PROTECTED] (urgent SMS with subject header)