To try to get more information, one thing to try would be to edit tomcat/webapps/jasperserver/WEB-INF/log4j.properties and change "log4j.rootLogger=ERROR, stdout, fileout" to "log4j.rootLogger=DEBUG, stdout, fileout" (this puts the jasperserver logger in "spew mode"). Restart tomcat (or at least restart jasperserver webapp) and monitor tomcat/webapps/jasperserver/WEB-INF/logs/jasperserver.log (if it doesn't exist, you'll want to "touch" the file to create one -- for some reason Jasper Server won't create a log if the file doesn't exist...no clue why). HTH...