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Build ID: 3.3.1.1 M20071023-1652 Steps To Reproduce: Using Eclipse 3.3.1, I found the following Error and backtrace in my Error log: java.lang.IllegalStateException: Cannot open an operation while one is already open at org.eclipse.core.commands.operations.DefaultOperationHistory.openOperation(DefaultOperationHistory.java:1310) at org.eclipse.ltk.internal.core.refactoring.UndoManager2.aboutToPerformChange(UndoManager2.java:139) at org.eclipse.jdt.internal.ui.text.correction.ChangeCorrectionProposal.performChange(ChangeCorrectionProposal.java:122) at org.eclipse.jdt.internal.ui.text.correction.CUCorrectionProposal.performChange(CUCorrectionProposal.java:304) at org.eclipse.jdt.internal.ui.text.correction.CUCorrectionProposal.apply(CUCorrectionProposal.java:282) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.insertProposal(CompletionProposalPopup.java:811) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.insertSelectedProposalWithMask(CompletionProposalPopup.java:757) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.access$27(CompletionProposalPopup.java:753) at org.eclipse.jface.text.contentassist.CompletionProposalPopup$5.widgetDefaultSelected(CompletionProposalPopup.java:574) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:112) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1101) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3319) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2971) at org.eclipse.ui.internal.dialogs.EventLoopProgressMonitor.runEventLoop(EventLoopProgressMonitor.java:123) at org.eclipse.ui.internal.dialogs.EventLoopProgressMonitor.isCanceled(EventLoopProgressMonitor.java:97) at org.eclipse.core.internal.jobs.ThreadJob.isCanceled(ThreadJob.java:132) at org.eclipse.core.internal.jobs.ThreadJob.joinRun(ThreadJob.java:167) at org.eclipse.core.internal.jobs.ImplicitJobs.begin(ImplicitJobs.java:87) at org.eclipse.core.internal.jobs.JobManager.beginRule(JobManager.java:225) at org.eclipse.core.internal.resources.WorkManager.checkIn(WorkManager.java:117) at org.eclipse.core.internal.resources.Workspace.prepareOperation(Workspace.java:1744) at org.eclipse.core.internal.resources.Workspace.checkpoint(Workspace.java:363) at org.eclipse.ltk.internal.core.refactoring.UndoableOperation2ChangeAdapter.aboutToNotify(UndoableOperation2ChangeAdapter.java:277) at org.eclipse.core.commands.operations.TriggeredOperations.aboutToNotify(TriggeredOperations.java:362) at org.eclipse.core.commands.operations.DefaultOperationHistory$1.run(DefaultOperationHistory.java:911) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37) at org.eclipse.core.commands.operations.DefaultOperationHistory.notifyListeners(DefaultOperationHistory.java:900) at org.eclipse.core.commands.operations.DefaultOperationHistory.notifyAboutToExecute(DefaultOperationHistory.java:941) at org.eclipse.core.commands.operations.DefaultOperationHistory.openOperation(DefaultOperationHistory.java:1321) at org.eclipse.ltk.internal.core.refactoring.UndoManager2.aboutToPerformChange(UndoManager2.java:139) at org.eclipse.jdt.internal.ui.text.correction.ChangeCorrectionProposal.performChange(ChangeCorrectionProposal.java:122) at org.eclipse.jdt.internal.ui.text.correction.CUCorrectionProposal.performChange(CUCorrectionProposal.java:304) at org.eclipse.jdt.internal.ui.text.correction.CUCorrectionProposal.apply(CUCorrectionProposal.java:282) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.insertProposal(CompletionProposalPopup.java:811) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.insertSelectedProposalWithMask(CompletionProposalPopup.java:757) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.access$27(CompletionProposalPopup.java:753) at org.eclipse.jface.text.contentassist.CompletionProposalPopup$5.widgetDefaultSelected(CompletionProposalPopup.java:574) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:112) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1101) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3319) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2971) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2389) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2353) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2219) at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:289) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:461) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:106) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:169) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:106) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:76) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:363) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:508) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:447) at org.eclipse.equinox.launcher.Main.run(Main.java:1173) at org.eclipse.equinox.launcher.Main.main(Main.java:1148)
This is the refactoring undo manager (UndoManager2).
I wonder how this happend: While a quick fix was waiting to be applied, you were able to invoke a new quick fix. Do you have steps?
We need steps to reproduce...
I'm afraid I don't and I haven't seen it since.
*** Bug 281199 has been marked as a duplicate of this bug. ***
