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Product Version = NetBeans IDE 7.0.1 (Build 201107282000) Operating System = Windows 7 version 6.1 running on amd64 Java; VM; Vendor = 1.7.0 Runtime = Java HotSpot(TM) 64-Bit Server VM 21.0-b17 When creating a new File Type using new file wizard in netbeans module projects, an IllegalArgumentException is thrown. All appropriate files get created/modified except the package-info.java file. Steps ------ 1. Create a new netbeans module project and create a new File Type (by file name extension) using the wizard. 2. When clicking 'Finish' button an IllegalArgumentException will be shown. See the attachment. By canceling the wizard, it can be seen that all appropriate files have been created/modified except the package-info.java file.
Created attachment 114515 [details] Error log
*** This bug has been marked as a duplicate of bug 204274 ***
I found this issue in the latest trunk revision. The ide I used to report this bug is 7.0.1 . That is why version 7.0.1 showed up in the bug description. Version 7.0.1 does not have this issue. Sorry for the confusion.
I cannot reproduce in a dev build, and the stack trace you quote does not match dev sources. It matches old sources prior to enhanced diagnostics added for bug #204274. So it seems you are not running what you think you are running.