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java.lang.IllegalStateException: Duplicate pair in treePair1: SL[/Browsers/SwingBrowser pair2: SL[/Browsers/SwingBrowser index1: 7 index2: 7 item1: org.netbeans.core.ui.SwingBrowser@19cec59 item2: org.netbeans.core.ui.SwingBrowser@19cec59 id1: 1610154 id2: 19e6e00
Well, it is popular NetBeans 4.0Beta / 4.1EA1 bug. Final release of NB4.0 and NB4.1 EA2 release contain fix. If you have same problem in final 4.0 or 4.1 EA2, feel free to reopen, thanks. *** This issue has been marked as a duplicate of 48590 ***