Hi, I have the same problem. The application run to Linux Ubuntu v.9.04 or v. 10.04 with JasperReport 3.7.1 and I had the problem AFTER the update of JRE from v. 1_6_22 to 1_6_24. The problem is random, pushing the button the viewer sometimes start and view the report, sometimes I get this error: sun.awt.X11.XException: Cannot write XdndAware property at sun.awt.X11.XDnDDropTargetProtocol.registerDropTarget(XDnDDropTargetProtocol.java:79) at ecc... I have tried to update to JasperReport v. 4.0.1, but the result is the same. Is there a solution or workaround? Regards Marco
