Zandronum

OK I've been looking for 3 hours on this topic and i still have no answer. So naturally, i would talk to the guys that made doomseeker. I need help on making a server (survival co-op, precisely). Every time i try to make the server, it says:

the following requires a map change: Skill

And once i click on yes, nothing happens. It goes into an endless loading screen, i guess.

Help? By the way i'm a noob so i don't get all this.

(Wads:Stronghold_V1, Stronghold_violence_V4)

Strange error. Can you provide a screenshot?

Never mind i fixed the problem. It had to do with the wad itself. Simply had to download the online fix.