Daniel Zaharia wrote: The exception type is : System.Security.Policy.PolicyException I think it has somthing to do with SecurityPermission and ReflectionPermission... No, it has something to do with the Policy!!! So either change your policy to allow executiong ffrom network shares or change the way you load your assembly!

You should not load the DLL from a network path... instead use a local copy. Or change the default security settings in "Control Panel".