I'm trying to create a v2.0 interop for a third party product. We managed to
do this achieve this with v1.1 and have been using it succesfully for a few
years now. But with v2.0 TlbImp gives the following messages (I've included
them all but I guess the last couple are the important ones). Thanks.

TlbImp : warning TI0000 : Type library importer encountered a property
getter 'UserTrackingEnabled' on type 'AbsDB.AbsOpsSession' without a valid
return type.
The importer will attempt to import this property as a method instead.
TlbImp : warning TI0000 : Type library importer has encountered a source
interface containing properties: 'AbsStringsA'.
TlbImp : warning TI0000 : Type library importer encountered a source
interface on coclass 'AbsUtilThunkMap' with a NewEnum member.  This is not
supported.
TlbImp : warning TI0000 : Type 'AbsUtilThunkMap' is invalid and may only be
partially converted.
TlbImp : error TI0000 : System.SystemException - The type library importer
encountered an error during type verification. Try importing without class
members. : System.TypeLoadException - Missing definition for required runtime
implemented delegate method.