Unhandled Exception

[60fpshacksrock]

Unhandled Exception: System.TypeInitializationException: The type initializer fo
r 'Fsp.Interop.Api' threw an exception. ---> System.TypeLoadException: incorrect
dll version (need 1.6, have 2.0)
at Fsp.Interop.Api.CheckVersion()
at Fsp.Interop.Api..cctor()
--- End of inner exception stack trace ---
at Fsp.Service..ctor(String ServiceName)
at XboxWinFsp.Program.Main(String[] args)