We were running a 60 player mission on http://www.gametracker.com/server_info/94.23.157.241:2302/ .
Suddenly 35 out of 60 players crashed with the message "Steam ticked failed". those people tried to come back but got kicked over and over again (steam ticket failed)
Then about 3 hours into the next mission it happened again and another 40-odd players got kicked, me included. For some of them verifying the gamecache worked. Most peopel are still unable to reconnect.
I downloaded the mission from servers where i can connect to without the CTD, and put it on the server mentioned above. Same result. still CTD.
Server runs BattlEye, no mandatory Addons.