After upgrading to Eclipse 4.5 Mars, the history window always remains empty, regardless of whether I dragged the file from Eclipse Navigator or select the command β Show history in the context menu. I use both Git and CVS - the problem is the same.
I found this entry in the .log file:
!ENTRY org.eclipse.ui 4 0 2015-07-03 10:09:28.308 !MESSAGE Unhandled event loop exception !STACK 0 java.lang.NullPointerException at org.eclipse.ui.internal.WorkbenchPage.busyShowView(WorkbenchPage.java:1270) at org.eclipse.ui.internal.WorkbenchPage$12.run(WorkbenchPage.java:4211) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.WorkbenchPage.showView(WorkbenchPage.java:4207) at org.eclipse.ui.internal.WorkbenchPage.showView(WorkbenchPage.java:4187) at org.eclipse.team.ui.TeamUI.showHistoryFor(TeamUI.java:107) at org.eclipse.team.internal.ccvs.ui.actions.ShowResourceInHistoryAction$1.run(ShowResourceInHistoryAction.java:35) at org.eclipse.team.internal.ccvs.ui.repo.RepositoryManager.run(RepositoryManager.java:765) at org.eclipse.team.internal.ccvs.ui.actions.CVSAction$2.run(CVSAction.java:361) at org.eclipse.team.internal.ccvs.ui.actions.CVSAction$3.run(CVSAction.java:370) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.team.internal.ccvs.ui.actions.CVSAction.run(CVSAction.java:367) at org.eclipse.team.internal.ccvs.ui.actions.ShowResourceInHistoryAction.execute(ShowResourceInHistoryAction.java:31) at org.eclipse.team.internal.ccvs.ui.actions.CVSAction.run(CVSAction.java:117) at org.eclipse.team.internal.ui.actions.TeamAction.runWithEvent(TeamAction.java:549) at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:237) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:595) at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:511) at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:420) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1127) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:654) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:598) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139) 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:380) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608) at org.eclipse.equinox.launcher.Main.run(Main.java:1515)
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