I have an external library with some code in it. I also have a WCF service library that I want to add my external library to. I choose the “Add Reference” command to add the external library to my service library. Now when I “start” my service library (using the VS service host) I get this exception:

I really need this external library, so what to do to prevent this exception?
Two options here:
and your servicehost is running the opposite or
present on your system, use fusion log to check for binding errors