ERRORS! Help!

So Im on a mac. When the Steam Username errors happened yesterday I decided to delete everything STEAM, and reinstalled. The next day after my attempt failed, the update came out. I got on and I had errors in servers, Dark RP, Sandbox, Etc… I downloaded my other games, CS:S, CS:GO, TF2, Portal 2, Killing Floor, Day of Defeat. I then got back on and it still had errors. I deleted local content didn’t work, also restarted steam 2 or 3 times didn’t work. What should I do? At one point before I deleted all the stuff I had Wiremod, now I don’t. I have also noticed that some of my player models have very bad graphics, (Any of the army guys really Riot, Suburban.)

Here are some links to pictures of these errors:http://steamcommunity.com/sharedfiles/filedetails/?id=112136931

-http://steamcommunity.com/sharedfiles/filedetails/?id=112136545

15 hours later…

Go to the menu and click in the controller button, that is close to the language flag. Check the boxes of the games that are giving you errors.