Server crashes whenever someone joins

Ever since the last update, anytime anybody joins my listen server, it crashes straight to desktop without making a sound or showing an error message.

Anyone know what’s causing this or how to fix it?

[editline]05:17PM[/editline]

I found out I crash whenever I join a server with anyone on it also.
Anyone know a fix to this?

If the server was up for a while it might be a lua table overflow thing… I get it occasionally.

I’m getting this also, this time my server itself crashes.