Game extensions not working

so i bought a couple of games that have content on G-mod like portal lost coast HL ep1&2 but some of the extensions (addons) don’t work and i am sure i checked them in the Extensions menu and restarted the game some i can find like TF2 and portal stuff but i can’t find the others can you please help me because the main reason i bought them is to use there props on G-mod thank you.

[editline]06:41AM[/editline]

please help don’t just sit there reading

[editline]07:07AM[/editline]

bump sry for bump I need help with this

[editline]07:08AM[/editline]

any one has a solution?