Utlmemory.h error crashing dedicated server!

Just recently I tried starting up my dedicated server. But once someone joined, they’d continue to connect for about 30 seconds and then my server would crash with this as the only error in the console:


utlmemory.h (322) : Assertion Failed: IsIDxValid(i)

I’m absolutely clueless as to whats causing this problem. My server was working perfectly fine 2 days ago when I started it. It’s fully up-to-date aswell. What i’m wondering is if this problem is possibly related to update 72?
Somebody please help me, because this is extremely annoying.

EDIT:

I fixed the problem! Turns out it was the latest version of Sakarias’ jet fighter. I’ll have to post this in the thread.