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I just installed MyEclipse 2017 CI and converted my old 2016 CI workspace. I did some messing around with my theme, not really sure exactly what I did, nothing out of the ordinary, restarted my Eclipse client, and now I get errors when I try to navigate to Window > Preferences.
Specifically, when I first click Preferences, I get this error, and the Preferences window doesn’t open:
!ENTRY org.eclipse.ui 4 0 2017-04-25 15:56:19.105 !MESSAGE Unhandled event loop exception !STACK 0 java.lang.IllegalStateException: ScrollBarsProvider not initialized at org.eclipse.swt.custom.ScrolledComposite.createScrollBar(ScrolledComposite.java:819) at org.eclipse.swt.custom.ScrolledComposite.<init>(ScrolledComposite.java:161) at org.eclipse.jface.preference.PreferenceDialog.createPageContainer(PreferenceDialog.java:491) at org.eclipse.jface.preference.PreferenceDialog.createDialogArea(PreferenceDialog.java:412) at org.eclipse.jface.dialogs.Dialog.createContents(Dialog.java:767) at org.eclipse.jface.preference.PreferenceDialog.access$5(PreferenceDialog.java:1) at org.eclipse.jface.preference.PreferenceDialog.lambda$0(PreferenceDialog.java:344) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.jface.preference.PreferenceDialog.createContents(PreferenceDialog.java:343) at org.eclipse.jface.window.Window.create(Window.java:426) at org.eclipse.jface.dialogs.Dialog.create(Dialog.java:1095) at org.eclipse.ui.internal.dialogs.WorkbenchPreferenceDialog.createDialogOn(WorkbenchPreferenceDialog.java:102) at org.eclipse.ui.dialogs.PreferencesUtil.createPreferenceDialogOn(PreferencesUtil.java:192) at org.eclipse.ui.dialogs.PreferencesUtil.createPreferenceDialogOn(PreferencesUtil.java:116) at org.eclipse.ui.internal.OpenPreferencesAction.run(OpenPreferencesAction.java:62) at org.eclipse.jface.action.Action.runWithEvent(Action.java:473) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:565) at org.eclipse.jface.action.ActionContributionItem.lambda$4(ActionContributionItem.java:397) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4410) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1079) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4228) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3816) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1121) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1022) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:687) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:604) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:138) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610) at org.eclipse.equinox.launcher.Main.run(Main.java:1519)If I click Preferences a second time, it will open, but none of the preference screens display. When I click a tab to get a screen to display, I get a popup that states “The currently displayed page contains invalid values”, along with the following error:
!ENTRY org.eclipse.jface 4 2 2017-04-25 16:02:11.702 !MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.jface". !STACK 0 java.lang.IllegalArgumentException: Argument cannot be null at org.eclipse.swt.SWT.error(SWT.java:4514) at org.eclipse.swt.SWT.error(SWT.java:4448) at org.eclipse.swt.SWT.error(SWT.java:4419) at org.eclipse.swt.widgets.Widget.error(Widget.java:482) at org.eclipse.swt.widgets.Widget.checkParent(Widget.java:291) at org.eclipse.swt.widgets.Widget.<init>(Widget.java:158) at org.eclipse.swt.widgets.Control.<init>(Control.java:110) at org.eclipse.swt.widgets.Scrollable.<init>(Scrollable.java:82) at org.eclipse.swt.widgets.Composite.<init>(Composite.java:96) at org.eclipse.jface.preference.PreferencePage.createControl(PreferencePage.java:223) at org.eclipse.jface.preference.PreferenceDialog.createPageControl(PreferenceDialog.java:1430) at org.eclipse.jface.preference.PreferenceDialog$9.run(PreferenceDialog.java:1197) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173) at org.eclipse.jface.preference.PreferenceDialog.showPage(PreferenceDialog.java:1189) at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.showPage(FilteredPreferenceDialog.java:608) at org.eclipse.jface.preference.PreferenceDialog$5.lambda$0(PreferenceDialog.java:656) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.jface.preference.PreferenceDialog$5.selectionChanged(PreferenceDialog.java:653) at org.eclipse.jface.viewers.StructuredViewer$3.run(StructuredViewer.java:878) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173) at org.eclipse.jface.viewers.StructuredViewer.firePostSelectionChanged(StructuredViewer.java:875) at org.eclipse.jface.viewers.StructuredViewer.handlePostSelect(StructuredViewer.java:1244) at org.eclipse.jface.viewers.StructuredViewer$5.widgetSelected(StructuredViewer.java:1270) at org.eclipse.jface.util.OpenStrategy.firePostSelectionEvent(OpenStrategy.java:265) at org.eclipse.jface.util.OpenStrategy.access$5(OpenStrategy.java:259) at org.eclipse.jface.util.OpenStrategy$1.lambda$1(OpenStrategy.java:431) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:182) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4203) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3819) at org.eclipse.jface.window.Window.runEventLoop(Window.java:818) at org.eclipse.jface.window.Window.open(Window.java:794) at org.eclipse.ui.internal.dialogs.WorkbenchPreferenceDialog.open(WorkbenchPreferenceDialog.java:211) at org.eclipse.ui.internal.OpenPreferencesAction.run(OpenPreferencesAction.java:63) at org.eclipse.jface.action.Action.runWithEvent(Action.java:473) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:565) at org.eclipse.jface.action.ActionContributionItem.lambda$4(ActionContributionItem.java:397) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4410) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1079) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4228) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3816) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1121) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1022) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:687) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:604) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:138) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610) at org.eclipse.equinox.launcher.Main.run(Main.java:1519)Tom,
I answered this on StackOverflow.
Without knowing what was changed in the Preferences, it’s hard to determine if this is a MyEclipse issue or an eclipse issue but to hopefully get you started again, please try a fresh workspace or a new window, as mentioned in StackOverflow.
Please let us know how you get on.
Thanks for your help Tony. You’re right, it was proving to be too difficult to track down exactly what the problem was since I’m not sure what exactly caused it. I just ended up creating a new workspace and moving on with my life.
Thanks for your help!
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