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This bug was originally marked as duplicate of bug 154338, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related. Build: NetBeans IDE Dev (Build 201605250002) VM: OpenJDK 64-Bit Server VM, 25.91-b14, OpenJDK Runtime Environment, 1.8.0_91-8u91-b14-0ubuntu4~14.04-b14 OS: Linux User Comments: GUEST: copying a file Stacktrace: java.lang.IllegalArgumentException: setSelectedIndex: 0 out of bounds at javax.swing.JComboBox.setSelectedIndex(JComboBox.java:620) at org.netbeans.modules.xml.refactoring.ui.CopyPanel.updateRoots(CopyPanel.java:391) at org.netbeans.modules.xml.refactoring.ui.CopyPanel.actionPerformed(CopyPanel.java:309) at javax.swing.JComboBox.fireActionEvent(JComboBox.java:1258) at javax.swing.JComboBox.setSelectedItem(JComboBox.java:586) at org.netbeans.modules.xml.refactoring.ui.CopyPanel.initValues(CopyPanel.java:148)
Created attachment 160024 [details] stacktrace