Fail to connect to atik EFW2 filter wheel

I'm not sure in my case the problem is the issue of the difference of "1", because even if I don't setup filter list, I can't connect with the wheel.
Message error I get when i just try to connect to the wheel is (more or less): recover of the class factory COM for the component CLSID ( ....numbers.....) not ok due to error 80131040. the definition of the specified assembly do not corrispond to the reference of the assembly.