A: 

The difference between the developers machines is environment, so you can guess that the developer whose machine it works on has something else set differently.

My guess is that it is either plain old environment (vars maybe) but more likely a dependency in the SapExtractor.dll. Use FileMon when you try to add a reference to see the file that is not getting found.

Also you can use Depends.exe for seeing which files SapExtractor.dll depends on.

Google for both tools, both from MS and very reputable.

Ryan

Ryan ONeill
Jörg B.