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:1438)
        at org.netbeans.core.windows.WindowManagerImpl.topComponentToolTipChanged(WindowManagerImpl.java:1154)
        at org.openide.windows.TopComponent.setToolTipText(TopComponent.java:871)
        at org.netbeans.modules.db.explorer.dataview.DataViewWindow.<init>(DataViewWindow.java:135)
        at org.netbeans.modules.db.explorer.actions.RecreateTableAction$1.run(RecreateTableAction.java:145)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:561)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:986)