Error: Material "models/agrunt/chrome2" uses unknown shader "VertexLitGeneric_DX6"

I get these errors when spawning HL1:S NPC’s that have anything shiny on them, i.e the alien grunts with the shiny armor and the nihilanth with his shiny butt thing:



Error: Material "models/agrunt/chrome2" uses unknown shader "VertexLitGeneric_DX6"
Error: Material "models/nihilanth/chrome_nihilanth" uses unknown shader "VertexLitGeneric_DX6"
Error: Material "models/islave/chrome_1" uses unknown shader "VertexLitGeneric_DX6


This is what it looks like:

http://hosting11.imagecross.com/image-hosting-62/6348gm_construct0000.jpg

Thanks

Still having the issue.