Wolfcam

Im trying to use Wolfcam.et..

I made the shortcut, I made a folder called wolfcam-et, in there I made a folder called demos. I put my demo's in there.

So that should be fine right??

I start Wolfcam.et via the shortcut then I typ in console:

/demo NAMEDEMO

So then it should load?? I get a message, client mismatch.
But when I load ET pro, the demo works but no Wolfcam.et

Plz help me out :o