I get the response for every group I queue for - it has been like this for about 3 weeks now.
I can only queue if the RL did not choose "SoO10". But even if I am saved at the same boss as the RL, I can't queue. - I can still queue for flex groups.

My lockout is curently 13/14. I just queued for serval Garrosh groups, who also have 13/14 - but still I recieve the "raid lockout" message.
http://i.imgur.com/hWKXXQQ.jpg

I have the same problem. It crashes during boss fights.