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https://issues.apache.org/jira/browse/GERONIMODEVTOOLS-709?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13018188#comment-13018188
 ] 

Han Hong Fang commented on GERONIMODEVTOOLS-709:
------------------------------------------------

I can not reproduce the problem with the steps. I checked both console and log 
file in workspace, and even the debug eclipse console (if in debug mode), but 
can not find the exception. Where did you find the exception?

My environment is winXP English + Helios SR1 + GEP in trunk. Anything different 
with yours?

> Unhandled event loop exception
> ------------------------------
>
>                 Key: GERONIMODEVTOOLS-709
>                 URL: 
> https://issues.apache.org/jira/browse/GERONIMODEVTOOLS-709
>             Project: Geronimo-Devtools
>          Issue Type: Bug
>    Affects Versions: 3.0-M2
>            Reporter: Ted Kirby
>            Assignee: Delos Dai
>            Priority: Minor
>
> Open G server.  In overview pane, click the link Open launch configuration.  
> Click the arguments tab.  Click OK.  Nothing happens, but this error log 
> record:
> Unhandled event loop exception
> java.lang.NullPointerException
>       at 
> org.eclipse.wst.server.core.model.ServerDelegate.setAttribute(ServerDelegate.java:334)
>       at 
> org.apache.geronimo.st.v30.core.GeronimoServerDelegate.setServerInstanceProperties(GeronimoServerDelegate.java:507)
>       at 
> org.apache.geronimo.st.v30.core.GeronimoServerDelegate.setInstanceProperty(GeronimoServerDelegate.java:499)
>       at 
> org.apache.geronimo.st.v30.core.GeronimoServerDelegate.setVMArgs(GeronimoServerDelegate.java:373)
>       at 
> org.apache.geronimo.st.v30.ui.internal.GeronimoLaunchConfigurationTabGroup.performApply(GeronimoLaunchConfigurationTabGroup.java:74)
>       at 
> org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationTabGroupWrapper.performApply(LaunchConfigurationTabGroupWrapper.java:220)
>       at 
> org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationTabGroupViewer.handleApplyPressed(LaunchConfigurationTabGroupViewer.java:1352)
>       at 
> org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationPropertiesDialog.okPressed(LaunchConfigurationPropertiesDialog.java:194)
>       at org.eclipse.jface.dialogs.Dialog.buttonPressed(Dialog.java:472)
>       at 
> org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationsDialog.buttonPressed(LaunchConfigurationsDialog.java:318)
>       at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:624)
>       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.debug.internal.ui.launchConfigurations.LaunchConfigurationsDialog.open(LaunchConfigurationsDialog.java:1133)
>       at 
> org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationPropertiesDialog.open(LaunchConfigurationPropertiesDialog.java:203)
>       at 
> org.eclipse.debug.ui.DebugUITools.openLaunchConfigurationPropertiesDialog(DebugUITools.java:448)
>       at 
> org.eclipse.debug.ui.DebugUITools.openLaunchConfigurationPropertiesDialog(DebugUITools.java:425)
>       at 
> org.eclipse.wst.server.ui.internal.editor.OverviewEditorPart$9.linkActivated(OverviewEditorPart.java:588)
>       at 
> org.eclipse.ui.forms.widgets.AbstractHyperlink.handleActivate(AbstractHyperlink.java:233)
>       at 
> org.eclipse.ui.forms.widgets.AbstractHyperlink.handleMouseUp(AbstractHyperlink.java:327)
>       at 
> org.eclipse.ui.forms.widgets.AbstractHyperlink.access$2(AbstractHyperlink.java:311)
>       at 
> org.eclipse.ui.forms.widgets.AbstractHyperlink$4.handleEvent(AbstractHyperlink.java:125)
>       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)
> I suspect this problem has been with us for a while.

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