I updated the map pack mod to version 1.3.1 and I've been getting errors when I load ARMA if I have this MOD selected. One of which is 'Runied houses' needs 'CAStructures MOD'.
Plus I wasn't able to log into the FGM sever this evening, kept getting kicked.
Try running without the map MOD and see if you still get errors. I turned mine off because in SP I couldn't reload certain sessions, even running them without the map MOD. I think the FGM server will let you on without the map MOD, as long as one of the maps isn't being used.
I have disabled the Map mod on the server due to issues with the keys and errors.
The server is upto date and strict checking is re-enabled again.
The following mods are allowed:
CBA_A3
Jayarma2lib
ACRE
Alive
Blastcore
JSRS
MCC_sandbox