You are not alone I have exactly the same issue.
It use to work fine on my old PC but since replacing it 5 months ago I have never been able to get it to work.
I have searched the web and cannot find anything that seems to fix this issue.
I have now moved to "Opus FSI" Beta for camera views and personally I think Ezdok was easier to configure.
I would still like to get Ezdok to work and I can only think that it is a clash of DLL or some hardware issue that is causing this.
Regards
Phil