[HELP] Server Crashing....

We have often Problems with this kind of error… are ther any fixes ?

Crazy physics on [521][prop_physics] [Ang:-nan,nan,180.000000] [Pos:-nan,-nan,nan] - removing
srcds_run: Zeile 372:  1166 Speicherzugriffsfehler  $HL_CMD
Add "-debug" to the srcds_run command line to generate a debug.log to help with solving this problem

Props are falling out of the map. Do you have stacker/precision tools installed?