09-15-2013, 11:40 AM
(This post was last modified: 09-01-2022, 01:02 AM by Fearless Community.
Edit Reason: Checked Encoding
)
You don't need HL2EP1 nor HL2EP2, most likely you are missing CSS content, you should either download it if you own that game, either install a "pirated" one, it's legal though, before doing this you should try verifying your VALVe games, including Garry's Mod, that might help aswell.