COMException when waiting for a WPF combobox to populate

So there is another question similar to this but I think this is a little different. Here is a the deal, I am working on an app where there is a series of combo boxes right, the user makes a selection and then the next combo box populates. It works but I see a bunch of these errors.

A first chance exception of type 'System.Runtime.InteropServices.COMException' occurred in mscorlib.dll

A first chance exception of type 'System.Runtime.InteropServices.COMException' occurred in mscorlib.dll A first chance exception of type 'System.Runtime.InteropServices.COMException' occurred in mscorlib.dll A first chance exception of type 'System.Runtime.InteropServices.COMException' occurred in mscorlib开发者_运维技巧.dll A first chance exception of type 'System.Runtime.InteropServices.COMException' occurred in mscorlib.dll A first chance exception of type 'System.Runtime.InteropServices.COMException' occurred in mscorlib.dll A first chance exception of type 'System.Runtime.InteropServices.COMException' occurred in mscorlib.dll A first chance exception of type 'System.Runtime.InteropServices.COMException' occurred in mscorlib.dll A first chance exception of type 'System.Runtime.InteropServices.COMException' occurred in mscorlib.dll A first chance exception of type 'System.Runtime.InteropServices.COMException'

I have my items panel template set like this for all of the combo boxes.

<ItemsPanelTemplate x:Key="VirtualizingItemsPanelTemplate">
        <VirtualizingStackPanel IsItemsHost="True"/>
    </ItemsPanelTemplate>

Is there anything else I can do to try to not get this error? It seems to be causing a bit of a slow down (I wouldn't quit call it freezing up - that is too string a term) but this screen is going to be super high value in terms of usage and I want to keep it as responsive as possible.

Anyone got any suggestions?

Thanks!

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I have the same problem, and from what I have found, the issue is dealing with the Visual Studio Debugger.

Applications that are built and ran separately from the debugger will not experience the delay.

It is a half-solution until Microsoft fixes their debugger/VS.