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This bug was originally marked as duplicate of bug 171427, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related. Build: NetBeans IDE 7.3 Beta 2 (Build 201211062253) VM: Java HotSpot(TM) 64-Bit Server VM, 23.6-b04, Java(TM) SE Runtime Environment, 1.7.0_10-b18 OS: Windows 7 Stacktrace: java.lang.NullPointerException at org.netbeans.modules.form.layoutdesign.LayoutPersistenceManager.saveLayout(LayoutPersistenceManager.java:158) at org.netbeans.modules.form.layoutdesign.LayoutPersistenceManager.saveContainer(LayoutPersistenceManager.java:138) at org.netbeans.modules.form.layoutdesign.LayoutModel.saveContainerLayout(LayoutModel.java:1217) at org.netbeans.modules.form.GandalfPersistenceManager.saveLayout(GandalfPersistenceManager.java:3379) at org.netbeans.modules.form.GandalfPersistenceManager.saveContainer(GandalfPersistenceManager.java:3333) at org.netbeans.modules.form.GandalfPersistenceManager.saveAnyComponent(GandalfPersistenceManager.java:3306)
Created attachment 130088 [details] stacktrace
This is a rather serious bug - not being able to save. Are you able to reproduce it? Could you possibly share the original GUI form where it happen? Do you remember the steps that lead to the problem? Any clue is welcomed. The exception itself only shows what is broken in the model (missing layout component for a visual component in the form), but is not sufficient to identify how it happened. Other exceptions show some problems when trying to align components, which would also be nice to have steps for, but this should not cause the save breakage. Thanks!
This bug already has 5 duplicates see http://statistics.netbeans.org/exceptions/detail.do?id=197399
Created attachment 143356 [details] stacktrace chk
Created attachment 144159 [details] stacktrace