Bought CS 1 Anthology pack, can I play 3rd party HL mods?

[Melachi]

Bought CS 1 Anthology pack, can I play 3rd party HL mods?

Ive tried so far to get Natural Selection to run and its not letting me so far :/

 

[Calaen]

No idea mate sorry :-(

 

[supersaint]

Have you got the latest version?It's 3.1 i believe.