I’m not a Server owner myself, but i would bet on the left side of my ballsack, that those errors occurs because you’re missing content. I’d recommend trying to remount the packages, if all else fails, extract the contents of CS:S, HL2 et cetera directly into your dedicated server game folder. That should potentially fix the vphysics issue.
If all else fails, return to this thread and let me know and i’ll do my best to come up with a new plan of action. Best of luck to you bud.