UnmeltingRaiders

The server always crashes when joining the PvP server.

So, when I launch Attack of the B-Team, everything goes perfectly. I play in a hub server which the IP is "hub2.chillax-tech.com", when I join it, everything goes fine either, but when I join their PvP raiding server the modpack simply quits and head back to the launcher. It happens all the time. I've already checked the version, re downloaded everything, I don't know what to try anymore.