We have the same Problem. After installing the Mod, the server shows no problems. While joining, the game is loading the map and after 1-2 minutes a blackscreen follows, further 3-4 sec the connection gets lost.

We tried with different maps and mods, only this one wont work :/

I had the same problem.
Talked to support they could helped me.

Also i would recommend after installing the Map to delete the Savegame.