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Build: NetBeans IDE Dev (Build 200902231810) VM: Java HotSpot(TM) Client VM, 11.0-b16, Java(TM) SE Runtime Environment, 1.6.0_11-b03 OS: Windows XP, 5.1, x86 User Comments: rmorriso: Staring Netbeans 6.7 M2 for the first time after installing. Note that I imported settings from my 6.5 install. GUEST: Starting NetBeans Stacktrace: java.lang.NullPointerException at org.netbeans.modules.editor.MainMenuAction$ShowToolBarAction.setMenu(MainMenuAction.java:273) at org.netbeans.modules.editor.MainMenuAction$ShowToolBarAction.getMenuPresenter(MainMenuAction.java:280) at org.openide.awt.DynaMenuModel.loadSubmenu(DynaMenuModel.java:91) at org.openide.awt.MenuBar$LazyMenu$MenuFolder.createInstance(MenuBar.java:673) at org.openide.loaders.FolderInstance.defaultProcessObjects(FolderInstance.java:771) at org.openide.loaders.FolderInstance.access$100(FolderInstance.java:98)
Created attachment 77434 [details] stacktrace
Strange, looks like there was no Preferences instance in MimeLookup.
Also see #161042.
*** Issue 161937 has been marked as a duplicate of this issue. ***
The root cause is: java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:841) at java.util.HashMap$EntryIterator.next(HashMap.java:883) at java.util.HashMap$EntryIterator.next(HashMap.java:881) at org.netbeans.core.startup.NbInstaller.shouldDelegateClasspathResource(NbInstaller.java:829) I'm going to attach the whole stacktrace from messages.log.
Created attachment 80515 [details] The original exception
*** Issue 162443 has been marked as a duplicate of this issue. ***
*** This issue has been marked as a duplicate of 162566 ***