Cataclysm extension not working?

Hi everyone,
I'm new on Warmane, I left looooong ago back in the days of Arena Tournament.

I wanted to try Cataclysm after being on WotLK for some time, but after downloading the extension and launching it, it doesn't work..
I only get some error message and it won't start the game.
Has it been taken down or am I the only one with this issue?

Thanks a million.

Mourder.

Closed.
There are no more Cata realms here.

Here you can see current warmane realms: https://www.warmane.com/ (blackrock = old AT Wotlk)