I went back on the AH messed around a bit, bought a couple more items, sent some stuff to shared stash although it took a couple minutes to catch up, stuff was finally sent to stash. After that I was able to join a public game? Hope this helps!
edit: unless they fixed this today and I'm just full of it...
It seems like messing with the AH can help fix it, I'm not sure if this is a fix for everyone but it worked for me. It seemed like I was lagged out on the AH waiting for stuff to be sent to the shared stash but after a minute or so my items were finally sent to my stash; the AH was working fine and then I could create / join games. No more 24000 / 24001 errors.
So in short, if you have GOLD, you might get into the game fast again!
it took me 10 seconds and I was playing the game again after this error. Try it if your stuck!