Wierd Error message

[SPC (Ret) Cyrus]

While playing on the liberation server, a red error message popped up for everyone on the server. I never seen this before and am quite confused about it. This message even showed up when new people joined the server.

 

[SFC (Ret) M. Brewer]

I don't know about the error message, but you could carry your battle buddy in that ruck! 

 

[SSG Salvatore]

These errors come up when you got a illegal copy of the game. Weird, because I'm pretty sure everyone here is running legal versions with the DLC's included.
It might be a bug in the server(?) I know this has been ongoing for ArmA II, that it was a known bug. But haven't seen it in ArmA III before.