Having an "Error vertex file" for "props_c17/door01_left.mdl". That seems to be a file that comes with Gmod packed into the "hl2_misc.vpk". I was currently running the map in a single player sandbox mode to check out the map and see if I want to keep it. Map looks cool, but because of this error, any door that uses that "door01" model is invisible. How do I fix this? Never had this issue before even with other maps that use that door.