Every time a Source engine game updates, it is possible that SourceOP's understanding of the game's binaries will break. This can cause crashes or erratic behavior. To fix it, the DF_funcoffs.txt needs to be updated.

You can find the most recent DF_funcoffs.txt here:
http://www.sourceop.com/modules.php?...p=getit&lid=43

Click here to see when it was last updated:
http://www.sourceop.com/modules.php?...details&lid=43