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What steps will reproduce the problem? 1.While installing the "Eclipse XML" plugin from yoxos marketplace. -- Error Details -- Date: Fri Dec 24 10:28:48 IST 2010 Message: Unhandled event loop exception Severity: Error Product: Eclipse 1.3.1.20100913-1228 (org.eclipse.epp.package.jee.product) Plugin: org.eclipse.ui Session Data: eclipse.buildId=M20100909-0800 java.version=1.6.0_22 java.vendor=Sun Microsystems Inc. BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US Framework arguments: -product org.eclipse.epp.package.jee.product -product org.eclipse.epp.package.jee.product Command-line arguments: -os win32 -ws win32 -arch x86 -product org.eclipse.epp.package.jee.product -data F:\Eclipse\helios workspace -product org.eclipse.epp.package.jee.product Exception Stack Trace: java.lang.NullPointerException at org.eclipse.epp.internal.mpc.ui.wizards.ItemButtonController.updateAppearance(ItemButtonController.java:187) at org.eclipse.epp.internal.mpc.ui.wizards.ItemButtonController.<init>(ItemButtonController.java:100) at org.eclipse.epp.internal.mpc.ui.wizards.DiscoveryItem.createContent(DiscoveryItem.java:226) at org.eclipse.epp.internal.mpc.ui.wizards.DiscoveryItem.<init>(DiscoveryItem.java:109) at org.eclipse.epp.internal.mpc.ui.wizards.MarketplaceViewer.doCreateViewerItem(MarketplaceViewer.java:191) at org.eclipse.equinox.internal.p2.ui.discovery.wizards.CatalogViewer$3.doCreateItem(CatalogViewer.java:332) at org.eclipse.equinox.internal.p2.ui.discovery.util.ControlListViewer.createNewItem(ControlListViewer.java:244) at org.eclipse.equinox.internal.p2.ui.discovery.util.ControlListViewer.refreshAll(ControlListViewer.java:478) at org.eclipse.equinox.internal.p2.ui.discovery.util.ControlListViewer.internalRefresh(ControlListViewer.java:365) at org.eclipse.jface.viewers.StructuredViewer$7.run(StructuredViewer.java:1487) at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1422) at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1383) at org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:1485) at org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:1444) at org.eclipse.jface.viewers.StructuredViewer.setSorter(StructuredViewer.java:1760) at org.eclipse.epp.internal.mpc.ui.wizards.MarketplaceViewer.doQuery(MarketplaceViewer.java:286) at org.eclipse.epp.internal.mpc.ui.wizards.MarketplaceViewer.doQuery(MarketplaceViewer.java:229) at org.eclipse.epp.internal.mpc.ui.wizards.MarketplaceViewer.setContentType(MarketplaceViewer.java:328) at org.eclipse.epp.internal.mpc.ui.wizards.MarketplacePage$1.widgetSelected(MarketplacePage.java:111) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:234) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4066) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657) at org.eclipse.jface.window.Window.runEventLoop(Window.java:825) at org.eclipse.jface.window.Window.open(Window.java:801) at org.eclipse.epp.internal.mpc.ui.commands.MarketplaceWizardCommand.execute(MarketplaceWizardCommand.java:140) at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293) at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476) at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508) at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169) at org.eclipse.ui.internal.handlers.SlaveHandlerService.executeCommand(SlaveHandlerService.java:241) at org.eclipse.ui.menus.CommandContributionItem.handleWidgetSelection(CommandContributionItem.java:820) at org.eclipse.ui.menus.CommandContributionItem.access$19(CommandContributionItem.java:806) at org.eclipse.ui.menus.CommandContributionItem$5.handleEvent(CommandContributionItem.java:796) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4066) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2640) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2604) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2438) at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:671) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:664) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) 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:369) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179) 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:619) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574) at org.eclipse.equinox.launcher.Main.run(Main.java:1407)
This seems to work now. Closing.
