COMException generated while trying to customize an Office document

I'm trying to add a customization module to a document (Excel for example) using ServerDocument.AddCustomization() as told in msdn help but an exception is raised:

"Unable to cast COM object of type 'VSTOPersist.Interop.VSTOPersistWordClass' to interface type 'Microsoft.VisualStudio.Tools.Applications.Runtime.IAppInfoDocument'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{09989249-3281-432A-8BF8-6C680EEAF1B5}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE))."

I need to mention that this error appears only when I'm trying to customize a document without Runtime Storage Control, otherwise customization works ok. I'm specifing the .application file to use so this is not a problem, otherwise it wouldn't load specified .dll even if customization would not fail.

Customization is working ok by adding the _assemblyname and _assemblylocation properties to a new document, but I need to cutomize it programatically.

Everywhere I've looked I didn't find this problem so any help would be much appreciated.

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COMException generated while trying to customize an Office document

MAMMOTH_MK
Yes, it's a development machine with Visual Studio 2005 and VSTO. Since I'm programming on it I'm using Office programs very often.

And, as I said before, when I'm opening a new Excel document and add to it _assemblyname & _assemblylocation the next time it starts it is creating the activex to hold manifest and VSTO module is running ok. I guess if some things were not installed it had not to work in any case.

Thank you for your quick reply!
Johan Stenberg
I've found the problem.
Somehow Visual Studio 2005 Tools For Office nor Office Service Pack 2 are installing properly VSTO Runtime interfaces used for customization. As soon as I reinstalled VSTO Runtime by using vstor.exe (I chose Repair option, so it was already installed) everything worked ok.
Because I've been working for some time on the VSTO application and I didn't have any problems with COMs (this is the first COMException raised) I incline to believe Office SP2 is not installing corectly only the customization interfaces.

Thank you for support.
Brian Brashear

Does the computer that is running the AddCustomization code have Excel installed on it

Thanks,

Ade
COMException generated while trying to customize an Office document

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