java.lang.IllegalStateException: Assertion failed. WindowsAPI is required to be called from AWT thread only, see http://core.netbeans.org/proposals/threading/
        at org.netbeans.core.windows.WindowManagerImpl.assertEventDispatchThreadWeak(WindowManagerImpl.java:1444)
        at org.netbeans.core.windows.WindowManagerImpl.getMainWindow(WindowManagerImpl.java:142)
        at org.netbeans.modules.collab.provider.im.ui.ServerStatusPanel.createDialog(ServerStatusPanel.java:235)
        at org.netbeans.modules.collab.provider.im.ui.ServerStatusPanel.<init>(ServerStatusPanel.java:59)
        at org.netbeans.modules.collab.provider.im.IMReconnect.showStatusDialog(IMReconnect.java:97)
        at org.netbeans.modules.collab.provider.im.IMReconnect.addElem(IMReconnect.java:86)
        at org.netbeans.modules.collab.provider.im.IMReconnect.startReconnect(IMReconnect.java:79)
        at org.netbeans.modules.collab.provider.im.IMCollabSession.onError(IMCollabSession.java:639)
        at org.netbeans.lib.collab.xmpp.XMPPSession$CollaborationSessionNotifier.run(XMPPSession.java:3633)
        at org.netbeans.lib.collab.util.Worker.run(Worker.java:222)
        at java.lang.Thread.run(Thread.java:675)