Hey guys - I’ve been out of modding for a long while with all the crap going on with Valve/Steam/Source etc etc. I thought I’d try redownloading everything and try my hand at a mod again.
Working off the 2013 files (hammer.exe) I’ve started to build my first level. When I compile and run the game with only me (player) inside it works ok. As soon as I add even one NPC (citizen) the game will crash after a few seconds in game. Take out the NPC…works fine again. Any ideas why this would happen??