Missing textures/models

[Pyroninja]

I have installed Packs 1,2 and 3 and the stalker rp content pack yet other people are just errors. Please help
heres a screenshot http://steamcommunity.com/id/trikester/screenshot/558692947324329378

 

[John_Roxton]

Hmmm... are you sure you installed them correctly? Didn't forget to drag one in, etcetera.