Garry’s Mod is fucked up to an extreme. The spawn menu/“C” menu won’t open when I press “Q” or “C”. The skybox is missing in gm_construct. The Physgun is just showing Gravity Gun animations. The weapon selection is missing section 6, and in section 1, there are a bunch of blank spaces with the words “PRINT NAME”. One of the "PRINT NAME"s when opened, is the Toolgun without any text on the screen.
None of these problems appeared until Steam started updating. None of the problems appeared until I put a custom skin into the game for a few props (probably has nothing to do with the errors, maybe just a coincidence).
Here are a few screenshots for proof:http://imgur.com/a/KSKyu#0
EDIT: Before any of you say it, I tried binding “Q” to “+menu”, but the console said “+menu” was an unknown command.