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Build: NetBeans IDE Dev (Build 20120523-da4743d1f776) VM: Java HotSpot(TM) Client VM, 23.0-b21, Java(TM) SE Runtime Environment, 1.7.0_04-b20 OS: Linux Stacktrace: java.lang.NullPointerException at org.netbeans.modules.form.layoutdesign.LayoutInterval.contentWantResize(LayoutInterval.java:967) at org.netbeans.modules.form.layoutdesign.LayoutPosition.isFixedRelativePosition(LayoutPosition.java:725) at org.netbeans.modules.form.layoutdesign.LayoutPosition.getSequentialPosition(LayoutPosition.java:602) at org.netbeans.modules.form.layoutdesign.LayoutPosition.getOriginalPosition(LayoutPosition.java:209) at org.netbeans.modules.form.layoutdesign.LayoutFeeder.<init>(LayoutFeeder.java:126) at org.netbeans.modules.form.layoutdesign.LayoutDesigner.createFeeder(LayoutDesigner.java:958)
Created attachment 119837 [details] stacktrace
Created attachment 119838 [details] Sample project To reproduce, open the attached project and the form in that. 1. Select all the controls (using the navigator for example), and copy than (Ctrl + C) 2. Click at a form clean area and paste the components you have copied. 3. You should be able to see the exception after calling the paste operation.
Sorry for the messy names, but actually I am trying to create a use case for issue #212953 :(
Created attachment 120147 [details] stacktrace pasting items onto Panel in UI builder
Created attachment 120148 [details] stacktrace
Fixed as bug 213123. *** This bug has been marked as a duplicate of bug 213123 ***