My environment is Jasper Reports Server 5.2 on Windows Server 2008, the PC desktop is Windows 7 64-bit, IE 10, Java 8u25, Jasper data resource is an MS SQL Server 2005 database. Our application server is JBoss 5.1.0. I've been experiencing bizarre behavior attempting to create a simple domain. In Jasper, my user name has Role_Administrator rights. When I attempt to create the derived table in the Domain Designer by clicking the "Save" button, nothing happens. The derived table is not created. Next, I logout and back into jasper as JasperAdmin, and the result is the same. The derived table is not created. As a last resort, I logout JasperAdmin and back into jasper as superuser, and the result is the same. The derived table is not created. How do I go about looking for clues such as error messages in log files, etc.? The JBoss boot.log and server.log haven't been written to since the post-backup 5 am reboot. Is there somewhere on my desktop PC that I can look for clues? Windows event logs do capture anything related to Jasper. Another point of interest is that about a month ago, I experienced the extremely bizarre behavior of not being ablt to create a domain with the users as related above, but I also had the experience where first, one user would work, but not the others. Continuing in the same session, after about 10 minutes, superuser and JasperAdmin were working properly, but not my userid. In fact, I could not see the "About JasperReports Server" link in the lower left corner after logging in as superuser! Since then, my PC was replaced on 11/12/14 with with a new one, same model, same Windows 7 64-bit OS. Please, if anyone can give me any insights, suggestions, recommendations, etc., on how to debug this situation I will most gratefully and sincerely appreciate your help. Thank you for your consideration!