After playing 1 or more missions we get an error message when we try to select another mission. This also happens with any vanilla BI mission and it kicks the players back to the mission select screen. After a server restart everything is fine again and we can select any mission.
I have tested this being alone on the server when the error pops up:
Not a single mission loads
After a restart:
Every mission loads fine.

This message shows up:
Warning Message: No entry 'bin\config.bin/CfgGlasses/shemagh_faceOD.identityTypes'.

Never have this issue with the dedicated windows server running under wine.
Looks like the linux server refuses to ignore it and kicks the players back to the mission select screen while windows server just writes it to the rpt and proceeds with the mission.