This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Define "crashes". What exactly happens? Do you get an exception? Does the user interface disappear? To make it easier to troubleshoot, run the application from the command line using "java", not "javaw". That way you still see all exception stack traces.