Can't start games in old client right now.

This seems to have only just started to happen within the last hour. Can't make any type of game start, it just does nothing in the old client. New client works fine, I use the old one for item sets a lot.

Also have noticed it seems like if I don't make sure to open the old client sometimes my item sets are messed up, like I get the item sets from the last account I logged into with the old client, or something.

I tried restarting the client and logging in again.