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I got several of these NPEs as I was debugging my runtime Eclipse app. Each NPE was accompanied with an error dialog. eclipse.buildId=I20060321-1210 java.version=1.5.0_03 java.vendor=Sun Microsystems Inc. BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US Command-line arguments: -os win32 -ws win32 -arch x86 Error 2006-03-27 01:18:57.060 Problems occurred when invoking code from plug-in: "org.eclipse.ui.workbench". java.lang.NullPointerException at org.eclipse.debug.internal.ui.actions.AbstractDebugActionDelegate.update(AbstractDebugActionDelegate.java:306) at org.eclipse.debug.internal.ui.actions.AbstractDebugActionDelegate.selectionChanged(AbstractDebugActionDelegate.java:411) at org.eclipse.ui.internal.AbstractPartSelectionTracker$1.run(AbstractPartSelectionTracker.java:119) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37) at org.eclipse.core.runtime.Platform.run(Platform.java:816) at org.eclipse.ui.internal.AbstractPartSelectionTracker.fireSelection(AbstractPartSelectionTracker.java:117) at org.eclipse.ui.internal.WindowPartSelectionTracker$1.selectionChanged(WindowPartSelectionTracker.java:38) at org.eclipse.ui.internal.AbstractPartSelectionTracker$1.run(AbstractPartSelectionTracker.java:119) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37) at org.eclipse.core.runtime.Platform.run(Platform.java:816) at org.eclipse.ui.internal.AbstractPartSelectionTracker.fireSelection(AbstractPartSelectionTracker.java:117) at org.eclipse.ui.internal.PagePartSelectionTracker$1.selectionChanged(PagePartSelectionTracker.java:45) at org.eclipse.jface.viewers.Viewer$2.run(Viewer.java:162) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37) at org.eclipse.core.runtime.Platform.run(Platform.java:816) at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:44) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:149) at org.eclipse.jface.viewers.Viewer.fireSelectionChanged(Viewer.java:160) at org.eclipse.jface.viewers.StructuredViewer.updateSelection(StructuredViewer.java:1922) at org.eclipse.debug.internal.ui.viewers.AsynchronousViewer.updateSelection(AsynchronousViewer.java:799) at org.eclipse.jface.viewers.StructuredViewer.handleInvalidSelection(StructuredViewer.java:1063) at org.eclipse.debug.internal.ui.viewers.AsynchronousViewer.restoreSelection(AsynchronousViewer.java:765) at org.eclipse.debug.internal.ui.viewers.AsynchronousViewer.preservingSelection(AsynchronousViewer.java:736) at org.eclipse.debug.internal.ui.viewers.AsynchronousModel.preservingSelection(AsynchronousModel.java:415) at org.eclipse.debug.internal.ui.viewers.AsynchronousTreeModel.remove(AsynchronousTreeModel.java:143) at org.eclipse.debug.internal.ui.viewers.RemoveRequestMonitor.performUpdate(RemoveRequestMonitor.java:39) at org.eclipse.debug.internal.ui.viewers.AsynchronousRequestMonitor$1.runInUIThread(AsynchronousRequestMonitor.java:51) at org.eclipse.ui.progress.UIJob$1.run(UIJob.java:94) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:123) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3323) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2969) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1909) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1873) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:418) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143) at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:107) at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:78) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:169) 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.core.launcher.Main.invokeFramework(Main.java:338) at org.eclipse.core.launcher.Main.basicRun(Main.java:282) at org.eclipse.core.launcher.Main.run(Main.java:977) at org.eclipse.core.launcher.Main.main(Main.java:952)
i have also this. And i looks when i have this i also have this exception in the log: (this happens before the debug nullpointer) java.lang.NullPointerException at org.eclipse.debug.internal.ui.actions.CopyToClipboardActionDelegate.initialize(CopyToClipboardActionDelegate.java:43) bugs: 131884 133317 So looks like it is related? using build: Version: 3.2.0 Build id: I20060321-1210
*** This bug has been marked as a duplicate of 131884 ***
