When you launch BeamMP the launcher spams (core) bind failed.
Please make sure you have one BeamMP Launcher open.
If your game crashed and you try to start it again make sure that no other BeamNG.drive is open (make sure to check in task manager).
If all else fails restart your pc (This will work most of the time).
In an extremely rare case make sure you dont have any other application running on port 4444.
where to see this port
Yeah, Im wondering the same thing. Everything was working fine last night, and this morning nothings been working. I would get to the servers page, I can join a few servers with minimal bugs (the multiplayer menu will no longer show up right) But when i do Cops and Robbers, I get the error code. Ive deleted all files, and redownloaded the Multiplayer Mod (only way i could get some servers to work) But doing any of the better servers will give me an error code. I wish i could figure out how to view the port 4444.
BeamNG Multiplayer settings in-game
Launcher.cfg in the BeamMP-Launcher folder
You can try setting both to 4445