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Steps to reproduce: - add jframe forms A and B - create button in form A - select button and press CTRL+C - open form B, select frame and press CTRL+V - now press UNDO -> assertion java.lang.AssertionError at org.netbeans.modules.form.layoutdesign.support.SwingLayoutBuilder.fillGroup(SwingLayoutBuilder.java:228) at org.netbeans.modules.form.layoutdesign.support.SwingLayoutBuilder.composeGroup(SwingLayoutBuilder.java:194) at org.netbeans.modules.form.layoutdesign.support.SwingLayoutBuilder.fillGroup(SwingLayoutBuilder.java:215) at org.netbeans.modules.form.layoutdesign.support.SwingLayoutBuilder.composeGroup(SwingLayoutBuilder.java:194) at org.netbeans.modules.form.layoutdesign.support.SwingLayoutBuilder.createLayout(SwingLayoutBuilder.java:137) ... Product Version: NetBeans IDE Dev (Build 200708202346) Java: 1.6.0_02; Java HotSpot(TM) Client VM 1.6.0_02-b05 System: Linux version 2.6.20-16-generic running on i386; UTF-8; en_US (nb)
Created attachment 47697 [details] exception.txt
Fixed. /cvs/form/src/org/netbeans/modules/form/CopySupport.java new revision: 1.40; previous revision: 1.39
Verified Product Version: NetBeans IDE Dev (Build 20070927012459) Java: 1.6.0_03-ea; Java HotSpot(TM) Client VM 1.6.0_03-ea-b01 System: Windows XP version 5.1 running on x86; Cp1250; cs_CZ (nb)
*** Issue 118592 has been marked as a duplicate of this issue. ***