Anyone else getting this?

Getting error 1012 (Game version needs update) after hitting the "START" button on the main screen.
Boots me out of the game & launcher, but upon reopening the launcher, it doesn't force any kind of update like it normally would if I did have an out of date version.

I was playing earlier today, then logged off to go to Uni. After I came home I tried logging in and this happened. Computer was completely unattended the whole time so I can't imagine I did something between logging off and attempting to login tonight.