Cant Join Custom Games on Zombie Mode, MP not tested yet

[Syinea]

Hello iam completly new to Plutonium.
Now i have a Question.
i can only join in Normal Servers.
Servers with Custom Maps, it loads a bit and at the End i got a Error that the Script cannot be found a compile error?
and sometimes its loading nothing on other Maps, so that i must close the Game via the Console

i hope someone can help

Greetings Syinea