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Some exceptions are related to missing source files, but during startup (after initial dissplay of GUI but before any user interaction), error dialog after dialog pops up reporting IOExecptions until the Gui no longer responds and I have ot kill the application
Could you please attach messages.log? Or at least provide the exception stacktraces and build number? (messages.log would be much better - you can find it in $nbuser/var/log/ directory) Otherwise we are unable to identify the problem.
No info provided -> closing