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I20090203-1200 1) I did a control-F1 and selected "Add cast" 2) Got an error dialog that there was an error applying the cast (something like that, I forget the exact message). I copied the text in the error dialog below. Here is the line of code: _contentService.getFilterService().resetPreferences(); The _content service is an INavigatorContentService and the desired method is in NavigatorContentService. I can't make this happen again. Here are the traces from the error log: !ENTRY org.eclipse.jdt.ui 4 10001 2009-02-08 11:32:47.547 !MESSAGE Internal Error !STACK 1 org.eclipse.core.runtime.CoreException: First position: '' at 4709, this position: 'Object' at 4711 at org.eclipse.jdt.internal.ui.text.correction.proposals.CUCorrectionProposal.performChange(CUCorrectionProposal.java:343) at org.eclipse.jdt.internal.ui.text.correction.proposals.CUCorrectionProposal.apply(CUCorrectionProposal.java:301) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.insertProposal(CompletionProposalPopup.java:931) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.insertSelectedProposalWithMask(CompletionProposalPopup.java:877) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.verifyKey(CompletionProposalPopup.java:1304) at org.eclipse.jface.text.contentassist.ContentAssistant$InternalListener.verifyKey(ContentAssistant.java:806) at org.eclipse.jface.text.TextViewer$VerifyKeyListenersManager.verifyKey(TextViewer.java:482) at org.eclipse.swt.custom.StyledTextListener.handleEvent(StyledTextListener.java:62) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1156) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1180) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1165) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1005) at org.eclipse.swt.custom.StyledText.handleKeyDown(StyledText.java:5693) at org.eclipse.swt.custom.StyledText$7.handleEvent(StyledText.java:5398) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1156) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1180) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1165) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1192) at org.eclipse.swt.widgets.Widget.gtk_key_press_event(Widget.java:698) at org.eclipse.swt.widgets.Control.gtk_key_press_event(Control.java:2767) at org.eclipse.swt.widgets.Composite.gtk_key_press_event(Composite.java:702) at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:1541) at org.eclipse.swt.widgets.Control.windowProc(Control.java:4508) at org.eclipse.swt.widgets.Display.windowProc(Display.java:4174) at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native Method) at org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:7534) at org.eclipse.swt.widgets.Display.eventProc(Display.java:1184) at org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Native Method) at org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(OS.java:1850) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3093) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2388) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2352) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2204) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:499) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:333) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:492) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:368) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179) 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:597) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:556) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:511) at org.eclipse.equinox.launcher.Main.run(Main.java:1270) Caused by: org.eclipse.jface.text.BadLocationException: First position: '' at 4709, this position: 'Object' at 4711 at org.eclipse.jface.text.link.LinkedPositionGroup.enforceEqualContent(LinkedPositionGroup.java:132) at org.eclipse.jface.text.link.LinkedPositionGroup.addPosition(LinkedPositionGroup.java:113) at org.eclipse.jdt.internal.ui.viewsupport.LinkedProposalModelPresenter.enterLinkedMode(LinkedProposalModelPresenter.java:82) at org.eclipse.jdt.internal.ui.text.correction.proposals.CUCorrectionProposal.performChange(CUCorrectionProposal.java:332) ... 51 more !SUBENTRY 1 org.eclipse.jdt.ui 4 4 2009-02-08 11:32:47.548 !MESSAGE First position: '' at 4709, this position: 'Object' at 4711 !STACK 0 org.eclipse.jface.text.BadLocationException: First position: '' at 4709, this position: 'Object' at 4711 at org.eclipse.jface.text.link.LinkedPositionGroup.enforceEqualContent(LinkedPositionGroup.java:132) at org.eclipse.jface.text.link.LinkedPositionGroup.addPosition(LinkedPositionGroup.java:113) at org.eclipse.jdt.internal.ui.viewsupport.LinkedProposalModelPresenter.enterLinkedMode(LinkedProposalModelPresenter.java:82) at org.eclipse.jdt.internal.ui.text.correction.proposals.CUCorrectionProposal.performChange(CUCorrectionProposal.java:332) at org.eclipse.jdt.internal.ui.text.correction.proposals.CUCorrectionProposal.apply(CUCorrectionProposal.java:301) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.insertProposal(CompletionProposalPopup.java:931) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.insertSelectedProposalWithMask(CompletionProposalPopup.java:877) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.verifyKey(CompletionProposalPopup.java:1304) at org.eclipse.jface.text.contentassist.ContentAssistant$InternalListener.verifyKey(ContentAssistant.java:806) at org.eclipse.jface.text.TextViewer$VerifyKeyListenersManager.verifyKey(TextViewer.java:482) at org.eclipse.swt.custom.StyledTextListener.handleEvent(StyledTextListener.java:62) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1156) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1180) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1165) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1005) at org.eclipse.swt.custom.StyledText.handleKeyDown(StyledText.java:5693) at org.eclipse.swt.custom.StyledText$7.handleEvent(StyledText.java:5398) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1156) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1180) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1165) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1192) at org.eclipse.swt.widgets.Widget.gtk_key_press_event(Widget.java:698) at org.eclipse.swt.widgets.Control.gtk_key_press_event(Control.java:2767) at org.eclipse.swt.widgets.Composite.gtk_key_press_event(Composite.java:702) at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:1541) at org.eclipse.swt.widgets.Control.windowProc(Control.java:4508) at org.eclipse.swt.widgets.Display.windowProc(Display.java:4174) at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native Method) at org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:7534) at org.eclipse.swt.widgets.Display.eventProc(Display.java:1184) at org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Native Method) at org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(OS.java:1850) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3093) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2388) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2352) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2204) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:499) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:333) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:492) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:368) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179) 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:597) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:556) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:511) at org.eclipse.equinox.launcher.Main.run(Main.java:1270)
*** This bug has been marked as a duplicate of bug 195834 ***