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COM Error on Upgrade to 10.1

Question asked by wmlanza on Dec 7, 2012
Latest reply on Dec 10, 2012 by wmlanza
I recently upgraded from arc 10.0 to Arc 10.1. I have an engine application that is now throwing a COM exception:

Retrieving the COM class factory for component with CLSID {DB2CDE6F-A264-4129-A4CE-99F9A47F1830} failed due to the following error: 80040111 ClassFactory cannot supply requested class (Exception from HRESULT: 0x80040111 (CLASS_E_CLASSNOTAVAILABLE)).

I have verified that CLSID {DB2CDE6F-A264-4129-A4CE-99F9A47F1830}  is in the registry. I did a Repair of my install of the Engine SDK for .NET, but that did not help.

Any help would be appreciated.

The code it is trying to run is:
Dim oXMLStream As IXMLStream = New ESRI.ArcGIS.esriSystem.XMLStream