@PabloElKillo - are you using persistence and have a War Room account? If not you can remove the ALiVE data module from your mission.
If you can.. upload your server's RPT file for us to look at (one where you try to start the mission logged in as admin and it fails).
@SavageCDN Yes, I'm using persistence and have a War Room account. I tried removing the ALiVE data module from the mission and that solved the problem (but stopped persistence working of course). I'll see if I can get one of my server admins to give me an RPT file.
Little update here. Actually, our missions are build without persistence and it seems to be working fine when log as Admin (not voted)