Garry's Mod 13 Trouble in Terrorist town server crashes

So these have been happening real often lately, and getting more frequent and then they’ll stop all together, the console showed nothing; until today.
I left HLSW recording the log all yesterday and today awaiting a crash, and then I saw this;
"20:02:10 L 09/13/2013 - 20:02:12: Engine error: player/phoenix.mdl (2) at -1. -1. -1. in contact with player/phoenix.mdl (2) at -1. -1. -1., crash. dist = -1, minq = 99999999999999998000000000000000000000000000000000000000000000000000000000000000000000000000000000000.000000
20:02:10 "
I always wondered why it happened more when the server was full (24 players) and then I realised it’s cuz it’s more possibility to have this contact.
So what is this? 2 player bug eachother or coincidence?
any way of resolving this?

Sorry for any mistakes, English isn’t my first language and corrections are appreciated although I’d prefer a fix


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