ok, some documentation will be cool :) I think I discovered why JI is breaking... I created a report on iReport using the wizard. That report queries a MSSQL database. Then, using the JI plugin, I created that report (along with datasource) on JasperIntelligence. Trying it on server works 1 in 100 times, almost always makes tomcat to choke and crash. Then I created the same report (with the same query), but this time without using the wizard. I uploaded it to JI and works well all the time. So I think that JI didn't liked very much the jrxml created by the wizard... that's the only guess I can think of. Anyone experienced the same issue ?? Regards,