I haven't got that error box but I still am having the queue freeze and have this loading circle on. It won't let me exit the queue so I have to end it with task manager.
I got this error AND a penalty for queue dodging. woo!
I am having this happen to me as I am typing this. I just waited until I thought someone dodged. Instead it just went back to the home screen and acted as if I didn't select a ban. 0-2 in my provisionals now. Fantastic.
Yeah... just when I was anticipating the game to start with ALL champions selected, it was stuck at 0 and never budged. I exited the client so I'm anticipating my "dodge". Rito please fix your damn game.
Guys if you log off and look, you will see there is an update out and dynamic is down. IMO i don't think RIOT was ready and it crashed on them. I would like to know if they are fixing this but i haven't seen anything yet...
After like a min in champselect dynamic queue my screen freezes. . .. or i time out or something ? about 4 out of 5 times. now i have to wait 27 min to join to get back into queue. 
This is still happening to me..... thought that they fix dynamic queue.....and dodge penalty great
same happend to me, is not a bug that happend to me frequently but is disgusting. (excuse me for my poor english)