OID "%1" defined for object %2 conflicts with the schema extensions needed for Windows Server 2008. Status/Consequence Adprep ...

============================================================================== OID "%1" defined for object %2 conflicts with the schema extensions needed for Windows Server 2008. [Status/Consequence] Adprep will not extend your existing schema. [User Action] Contact the vendor of the application that extended the schema with the OID value "%1" and resolve this inconsistency.  Then run adprep again.