Can't play on 1.6.4

[filett55]

Ok,since this morning I can't play on 1.6.4,every time I try to join the server I got the bad login error.This doesn't happen if I use 1.7 version.Then,I can't play any server with 1.6,not only mcsg.It's this problem happening to someone else?There's a way to solve it?

 

[Dave | Rev]

At the moment, you can only use 1.7 to play MCSG, and im guessing other servers (i only play MCSG )

QA;TL

(PM me if you have any more questions )