[Marttt]

Hmm, I don't have any tip to solve this, sorry.

Searching in the forum I found this post:

https://forums.alliedmods.net/showthread.php?t=263792

Although, the "solution" link is broken, but seem missing some third party software install.

Also, find this at GitHub

https://github.com/GameServerManager...GSM/issues/108

And this one in SRCDS forum:

http://forums.srcds.com/viewpost/19131/115054