MMC snap-in error in eventvwr

[Steigenberger]

I am trying to run eventvwr under Vista Home Premium Version 6.0.6002 Service
Pack 2 Build 6002. Eventvwr starts up and a pop up window shows that a
snap-in is being added to the console (although it does not say what the name
of the add-in is). Then eventvwr loads and I can see the overview and summary
listing.

When I go to the event viewer local panel (left side of screen) and expand
the Applications and services log, then click on MSFT office diagnostics, I
get an error:

"MMC has detected an error in a snap-in and is closing" It gives me two
options:

"report the error to MSFT then shut down MMC" and "Unload the snap-in and
continue running"

When I choose option 2 I get this error:

Unhandled exception in managed stack snap-in

FX:{b05566ad-fe9c-4363-be05-7a4cbb7cb510}

Exception has been thrown by the target of an invocation.

"System.Reflection.TargetInvocationException"

and this exception stack trace:

at
Microsoft.ManagementConsole.Internal.SnapInMessagePumpProxy.OnThreadException(Object sender, ThreadExceptionEventArgs e)
at
System.Windows.Forms.Application.ThreadContext.OnThreadException(Exception t)
at System.Windows.Forms.Control.WndProcException(Exception e)
at
System.Windows.Forms.Control.ControlNativeWindow.OnThreadException(Exception
e)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg,
IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.SendMessage(HandleRef hWnd,
Int32 msg, Int32 wParam, LVITEM& lParam)
at System.Windows.Forms.ListView.SetItemState(Int32 index, Int32 state,
Int32 mask)
at System.Windows.Forms.ListView.SelectedIndexCollection.Add(Int32
itemIndex)
at
Microsoft.Windows.ManagementUI.CombinedControls.UIControlProcessing.SelectItemInListVirtual(ListView lv, Int32 index)
at
Microsoft.Windows.ManagementUI.CombinedControls.EventDetailControl.SelectEventItem(Int32 index)
at
Microsoft.Windows.ManagementUI.CombinedControls.EventDetailControl.InitializeEventListView(Boolean refresh)
at
Microsoft.Windows.ManagementUI.CombinedControls.EventDetailControl.InitializeResultView()
at
Microsoft.Windows.ManagementUI.CombinedControls.EventDetailControl.RefreshControls()
at
Microsoft.Windows.ManagementUI.CombinedControls.EventDetailControl.ExecuteRefreshAction()
at
Microsoft.Windows.ManagementUI.CombinedControls.EventDetailControl.OnAction(ManagementAction action)
at Microsoft.EventViewer.SnapIn.MMCEventsResultView.RefreshResults()
at Microsoft.EventViewer.SnapIn.MMCEventsResultView.OnShow()
at Microsoft.EventViewer.SnapIn.FormControlBase.OnFormShow()
at Microsoft.EventViewer.SnapIn.FormViewEx.OnShow()
at Microsoft.ManagementConsole.View.ProcessNotification(Notification
notification)
at Microsoft.ManagementConsole.FormView.ProcessNotification(Notification
notification)
at
Microsoft.ManagementConsole.ViewMessageClient.ProcessNotification(Notification notification)
at
Microsoft.ManagementConsole.Internal.IMessageClient.ProcessNotification(Notification notification)
at
Microsoft.ManagementConsole.Executive.SnapInNotificationOperation.ProcessNotification()
at
Microsoft.ManagementConsole.Executive.Operation.OnThreadTransfer(SimpleOperationCallback callback)

When I click OK on the dialog box, I get a message "snap-in unavailable.
This snap-in performed a non-valid operation and has been unloaded. To
continue working with this snap-in, restart MMC or try loading the snap-in
again" followed by a repeat of the stack trace above.

Can anyone tell me how to fix this so I can use eventvwr?

Thanks