I'm getting the same thing and am especially frustrated 'cause I've already wasted the last several days with my cable company's wiring having been down... Argh. Can't find any info anywhere... Never had a response to a support ticket. So that's pointless.
I was running fine for a few days except for the server issues then all of a sudden I start getting this error and can't log in ever. I have submitted two tickets with great struggle on this crappy webiste. It keeps having me log in over and over again. Which is a whole other issue. If I don't get a fracking response soon i'm going to have my cc company get a refund. Amazing how this is just tainting a much anticipated game. I have a preorder serial number and a deluxe addition one. the preorder one is the only one that I have entered in. it would really be a shame to cancel my game because tech support and a hosed up website care cripping my efforts. I'm one extremely ****ed off customer.