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I have four settings files. I click on them, IDE RC2, file is not opened.I move the files and copy them again. Make sure they are not read only. Then, I tried again. Exception, see below. java.lang.IllegalStateException: WARNING: Going from readAccess to writeAccess, see #10778: http://www.netbeans.org/issues/show_bug.cgi? id=10778 at org.openide.util.Mutex.enter (Mutex.java:436) at org.openide.util.Mutex.writeEnter (Mutex.java:388) at org.openide.util.Mutex.access$100 (Mutex.java:67) at org.openide.util.Mutex$Privileged.enterWriteAcces s(Mutex.java:1204) at org.openide.nodes.FilterNode.changeOriginal (FilterNode.java:327) at org.openide.loaders.InstanceDataObject$UpdatableN ode.update(InstanceDataObject.java:423) at org.openide.loaders.InstanceDataObject$3.resultCh anged(InstanceDataObject.java:594) at org.openide.util.lookup.AbstractLookup.notifyList eners(AbstractLookup.java:405) at org.openide.util.lookup.ProxyLookup$R.resultChang ed(ProxyLookup.java:406) at org.openide.util.lookup.ProxyLookup.setLookups (ProxyLookup.java:109) at org.netbeans.core.xml.FileEntityResolver$Lkp.upda te(FileEntityResolver.java:493) at org.netbeans.core.xml.FileEntityResolver$Lkp.befo reLookup(FileEntityResolver.java:451) at org.openide.util.lookup.ProxyLookup$R.myBeforeLoo kup(ProxyLookup.java:413) at org.openide.util.lookup.ProxyLookup$R.computeResu lt(ProxyLookup.java:346) at org.openide.util.lookup.ProxyLookup$R.allItems (ProxyLookup.java:336) at org.openide.loaders.InstanceDataObject.updateLook up(InstanceDataObject.java:603) at org.openide.loaders.InstanceDataObject.getCookieF romEP(InstanceDataObject.java:525) at org.openide.loaders.InstanceDataObject.getCookie (InstanceDataObject.java:538) at org.openide.loaders.DataNode.getCookie (DataNode.java:293) at org.openide.nodes.NodeLookup.addCookie (NodeLookup.java:61) at org.openide.nodes.NodeLookup.beforeLookup (NodeLookup.java:93) at org.openide.util.lookup.AbstractLookup$R.allItems (AbstractLookup.java:734) at org.openide.nodes.FilterNode$FilterLookup$ProxyRe sult.updateLookup(FilterNode.java:1436) at org.openide.nodes.FilterNode$FilterLookup$ProxyRe sult.checkResult(FilterNode.java:1428) at org.openide.nodes.FilterNode$FilterLookup$ProxyRe sult.allItems(FilterNode.java:1490) at org.openide.nodes.Node$LookupEventList.init (Node.java:1323) at org.openide.nodes.Node.internalLookup (Node.java:176) at org.openide.nodes.Node.getLookup (Node.java:637) at org.openide.nodes.FilterNode$FilterLookup.checkNo de(FilterNode.java:1349) at org.openide.nodes.FilterNode$FilterLookup$ProxyRe sult.checkResult(FilterNode.java:1428) at org.openide.nodes.FilterNode$FilterLookup$ProxyRe sult.allItems(FilterNode.java:1490) at org.openide.nodes.Node$LookupEventList.init (Node.java:1323) at org.openide.nodes.Node.internalLookup (Node.java:176) at org.openide.nodes.Node.getLookup (Node.java:637) at org.openide.nodes.FilterNode$FilterLookup.checkNo de(FilterNode.java:1349) at org.openide.nodes.FilterNode$FilterLookup$ProxyRe sult.checkResult(FilterNode.java:1428) at org.openide.nodes.FilterNode$FilterLookup$ProxyRe sult.allItems(FilterNode.java:1490) at org.openide.nodes.Node$LookupEventList.init (Node.java:1323) at org.openide.nodes.Node.internalLookup (Node.java:176) at org.openide.nodes.Node.getLookup (Node.java:637) at org.openide.nodes.FilterNode$FilterLookup.checkNo de(FilterNode.java:1349) at org.openide.nodes.FilterNode$FilterLookup$ProxyRe sult.checkResult(FilterNode.java:1428) at org.openide.nodes.FilterNode$FilterLookup$ProxyRe sult.allItems(FilterNode.java:1490) at org.openide.nodes.Node$LookupEventList.init (Node.java:1323) at org.openide.nodes.Node.internalLookup (Node.java:176) at org.openide.nodes.Node.getLookup (Node.java:637) at org.openide.windows.DefaultTopComponentLookup.upd ateLookups(DefaultTopComponentLookup.java:86) at org.openide.windows.TopComponent.setActivatedNode s(TopComponent.java:241) at org.openide.explorer.ExplorerPanel$PropL.property Change(ExplorerPanel.java:340) at org.openide.util.WeakListenerImpl$PropertyChange. propertyChange(WeakListenerImpl.java:131) at java.beans.PropertyChangeSupport.firePropertyChan ge(PropertyChangeSupport.java:305) at java.beans.PropertyChangeSupport.firePropertyChan ge(PropertyChangeSupport.java:242) at org.openide.explorer.ExplorerManager.setSelectedN odes(ExplorerManager.java:219) at org.openide.explorer.ExplorerManager.setSelectedN odes1(ExplorerManager.java:355) at org.openide.explorer.ExplorerManager.setExploredC ontextAndSelection(ExplorerManager.java:320) at org.openide.explorer.view.BeanTreeView.selectionC hanged(BeanTreeView.java:88) at org.openide.explorer.view.TreeView.callSelectionC hanged(TreeView.java:611) at org.openide.explorer.view.TreeView$TreePropertyLi stener.run(TreeView.java:963) at org.openide.util.Mutex.postRequest (Mutex.java:867) at org.openide.util.Mutex.postReadRequest (Mutex.java:347) at org.openide.explorer.view.TreeView$TreePropertyLi stener.valueChanged(TreeView.java:933) at javax.swing.tree.DefaultTreeSelectionModel.fireVa lueChanged(DefaultTreeSelectionModel.java:629) at javax.swing.tree.DefaultTreeSelectionModel.notify PathChange(DefaultTreeSelectionModel.java:1078) at javax.swing.tree.DefaultTreeSelectionModel.setSel ectionPaths(DefaultTreeSelectionModel.java:287) at javax.swing.tree.DefaultTreeSelectionModel.setSel ectionPath(DefaultTreeSelectionModel.java:170) at javax.swing.JTree.setSelectionPath (JTree.java:1172) at javax.swing.plaf.basic.BasicTreeUI.selectPathForE vent(BasicTreeUI.java:2240) at javax.swing.plaf.basic.BasicTreeUI$Handler.handle Selection(BasicTreeUI.java:3426) at javax.swing.plaf.basic.BasicTreeUI$Handler.mouseP ressed(BasicTreeUI.java:3387) at java.awt.AWTEventMulticaster.mousePressed (AWTEventMulticaster.java:222) at java.awt.AWTEventMulticaster.mousePressed (AWTEventMulticaster.java:221) at java.awt.AWTEventMulticaster.mousePressed (AWTEventMulticaster.java:221) at java.awt.AWTEventMulticaster.mousePressed (AWTEventMulticaster.java:221) at java.awt.AWTEventMulticaster.mousePressed (AWTEventMulticaster.java:221) at java.awt.Component.processMouseEvent (Component.java:5460) at javax.swing.JComponent.processMouseEvent (JComponent.java:3052) at java.awt.Component.processEvent (Component.java:5228) at java.awt.Container.processEvent (Container.java:1961) at java.awt.Component.dispatchEventImpl (Component.java:3931) at java.awt.Container.dispatchEventImpl (Container.java:2019) at java.awt.Component.dispatchEvent (Component.java:3779) at java.awt.LightweightDispatcher.retargetMouseEvent (Container.java:4203) at java.awt.LightweightDispatcher.processMouseEvent (Container.java:3880) at java.awt.LightweightDispatcher.dispatchEvent (Container.java:3813) at java.awt.Container.dispatchEventImpl (Container.java:2005) at java.awt.Window.dispatchEventImpl (Window.java:1757) at java.awt.Component.dispatchEvent (Component.java:3779) [catch] at java.awt.EventQueue.dispatchEvent (EventQueue.java:463) at java.awt.EventDispatchThread.pumpOneEventForHiera rchy(EventDispatchThread.java:234) at java.awt.EventDispatchThread.pumpEventsForHierarc hy(EventDispatchThread.java:163) at java.awt.EventDispatchThread.pumpEvents (EventDispatchThread.java:157) at java.awt.EventDispatchThread.pumpEvents (EventDispatchThread.java:149) at java.awt.EventDispatchThread.run (EventDispatchThread.java:110)
Probable duplicate of Issue #41617. Please see this issue for more info. *** This issue has been marked as a duplicate of 41617 ***
Please note that the exception is only informational and doesn't change the program flow in any way. If something doesn't work, it has nothing to do with the exception and you can't just close it as a duplicate of other bug that displayed the same warning.