Problems with joining my own server

Well, I uploaded 2 custom maps on my server, which I host at an official hoster.
I edited the config with set_map custom_map_2.
Now, when I want to join the server, my game crashes, and I see this error:



I did already reinstall the server, but it´s still the same.
Has anyone got any idea? :/

Scenes are .sco, not .txt