LordTurbat, you tool. I came over 3 plugins that CRASHED my server after The Sacrifice dlc was out (Including 1 sourcemod extension). 2 of those had to be updated and 1 of those had to be permanently removed. I've seen a couple of l4dtoolz servers (both windows and linx) with no problems other than the daily sourcemod crash. If you want help, I suggest you look over your plugins and post them here.
Also, maybe your server crashes becuase you don't have the l4d1 survivors precached on sacrifice and no mercy? You could always try this in your server.cfg
sm_cvar precache_all_survivors 1