So when i launch my map with console from portal 2/portal2/maps folder everythign is fine,
but when i launch the exact same map from my workshop, i get this white reflection models.
Couldn't get HDR 'maps\the_shard_v1/c256_2416_-512.hdr' -- Trying non HDR 'maps\the_shard_v1/c256_2416_-512'
Failed, using default cubemap 'engine/defaultcubemap'
Couldn't get HDR 'maps\the_shard_v1/c1952_320_-448.hdr' -- Trying non HDR 'maps\the_shard_v1/c1952_320_-448'
Failed, using default cubemap 'engine/defaultcubemap'
etcetc
Any ideas ? 


this worked, will update the TWP post.