Pvt.Dan Hi, nice to see you again
Quote: "Runtime Error 2002 - Could not load animation at line 17504"
Sounds like a custom entity with animation is the root to the problem here? A quick search yielded some results, even an fpsc game
on "Steam". Seems some players had this problem when using older OS's like winxp or 8.1 ???
https://steamcommunity.com/app/467000/discussions/0/357286663676211851/
There are a few suggestions in this posting above. Might help ?

My games never have bugs. They just develop random features..
Lots and lots of random features...