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I get a ton of new exceptions in 2019-12 for basically every interaction in the IDE: It looks like it stopped handling old things (which might have been uninstalled) very well. org.eclipse.core.runtime.CoreException: No property tester contributes a property com.ifedorenko.m2e.sourcelookup.m2estratum to type class org.eclipse.ui.internal.views.log.LogEntry at org.eclipse.core.internal.expressions.TypeExtensionManager.getProperty(TypeExtensionManager.java:130) at org.eclipse.core.internal.expressions.TestExpression.evaluate(TestExpression.java:100) at org.eclipse.core.internal.expressions.CompositeExpression.evaluateAnd(CompositeExpression.java:55) at org.eclipse.core.internal.expressions.IterateExpression.evaluate(IterateExpression.java:199) at org.eclipse.core.internal.expressions.CompositeExpression.evaluateAnd(CompositeExpression.java:55) at org.eclipse.core.internal.expressions.WithExpression.evaluate(WithExpression.java:81) at org.eclipse.core.internal.expressions.ReferenceExpression.evaluate(ReferenceExpression.java:74) at org.eclipse.ui.internal.services.EvaluationReference.evaluate(EvaluationReference.java:74) at org.eclipse.ui.internal.services.EvaluationReference.evaluate(EvaluationReference.java:100) at org.eclipse.ui.internal.services.EvaluationReference.changed(EvaluationReference.java:94) at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.update(TrackableComputationExt.java:108) at org.eclipse.e4.core.internal.contexts.EclipseContext.processScheduled(EclipseContext.java:364) at org.eclipse.e4.core.internal.contexts.EclipseContext.set(EclipseContext.java:379) at org.eclipse.ui.internal.services.EvaluationService$1.changed(EvaluationService.java:79) at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.update(TrackableComputationExt.java:108) at org.eclipse.e4.core.internal.contexts.EclipseContext.processScheduled(EclipseContext.java:364) at org.eclipse.e4.core.internal.contexts.EclipseContext.set(EclipseContext.java:379) at org.eclipse.ui.internal.e4.compatibility.SelectionService.handleSelectionChanged(SelectionService.java:81) at org.eclipse.ui.internal.e4.compatibility.SelectionService.lambda$0(SelectionService.java:68) at org.eclipse.e4.ui.internal.workbench.SelectionAggregator$1.run(SelectionAggregator.java:123) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45) at org.eclipse.e4.ui.internal.workbench.SelectionAggregator.notifyListeners(SelectionAggregator.java:120) at org.eclipse.e4.ui.internal.workbench.SelectionAggregator.access$2(SelectionAggregator.java:118) at org.eclipse.e4.ui.internal.workbench.SelectionAggregator$5.lambda$0(SelectionAggregator.java:220) at org.eclipse.e4.core.contexts.RunAndTrack.runExternalCode(RunAndTrack.java:59) at org.eclipse.e4.ui.internal.workbench.SelectionAggregator$5.changed(SelectionAggregator.java:220) at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.update(TrackableComputationExt.java:108) at org.eclipse.e4.core.internal.contexts.EclipseContext.processScheduled(EclipseContext.java:364) at org.eclipse.e4.core.internal.contexts.EclipseContext.set(EclipseContext.java:379) at org.eclipse.e4.ui.internal.workbench.SelectionServiceImpl.setSelection(SelectionServiceImpl.java:34) at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.selectionChanged(CompatibilityPart.java:467) at org.eclipse.jface.viewers.Viewer$1.run(Viewer.java:151) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45) at org.eclipse.ui.internal.JFaceUtil.lambda$0(JFaceUtil.java:47) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:174) at org.eclipse.jface.viewers.Viewer.fireSelectionChanged(Viewer.java:148) at org.eclipse.jface.viewers.StructuredViewer.updateSelection(StructuredViewer.java:2123) at org.eclipse.jface.viewers.StructuredViewer.handleSelect(StructuredViewer.java:1170) at org.eclipse.jface.viewers.StructuredViewer$4.widgetSelected(StructuredViewer.java:1199) at org.eclipse.jface.util.OpenStrategy.fireSelectionEvent(OpenStrategy.java:242) at org.eclipse.jface.util.OpenStrategy.access$4(OpenStrategy.java:237) at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:402) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4406) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1512) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1535) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1520) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1324) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4193) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3810) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1160) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1049) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:660) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:559) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:154) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:150) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465)
Andrey, I have the vague memory that you work on showing such errors?
I have the same problem. This made my dev env unusable and I'm about setting it up again.
See bug 547760 comment 6 and bug 551414. *** This bug has been marked as a duplicate of bug 551414 ***
*** Bug 559553 has been marked as a duplicate of this bug. ***