Cannnot start iReport Designer after 'hard reset'

Issue:

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When my computer became unresponsive I did a "hard reset".  After rebooting, and trying to restart iReport Designer, I received the following stack trace:

==================================================================

java.lang.NullPointerException

at org.openide.util.Exceptions.attachLocalizedMessage(Exceptions.java:111)

at org.netbeans.core.windows.PersistenceHandler.load(PersistenceHandler.java:121)

at org.netbeans.core.windows.WindowSystemImpl.load(WindowSystemImpl.java:69)

catch at org.netbeans.core.NonGui$2.run(NonGui.java:178)

at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)

at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)

at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)

at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)

at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)

at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)

at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

================================================================================

Resolution:

iReport Designer stores various information in files in the directory .ireportpro. If iReport does not exit in a "clean" way some of these files may be left in a bad state that can create issues at subsequent attempts to start iReport Designer. Removing the directory .ireportpro resolved the problem. On Windows the .ireportpro directory can be found here: C:UsersAppDataRoaming.ireportpro

Ref. Case #00024771 -- 22:16, 29 February 2012 (UTC)