Here is the current situation for players from the ASIA region:

-Everybody with the digital version are getting "Error 12- No license attached".
-In Korea, GMs have a thread going to manually flag digital accounts to allow them to play. Currently, there is no other way for Digital Edition players to play and they have to wait for the GMs to flag the account one by one.
-In Taiwan, there are no GMs around to flag accounts.

Hope this doesn't affect the EU and NA accounts when the time comes. We're over 3 hour into the ASIA launch, and most people can't get in.

SOURCE: http://kr.battle.net/d3/ko/forum/topic/1380288015?page=1

Using the popularity of this post, i would like also ask anyone, who receive error 313500, this is very strange as i putting my password correctly and login information and stil getting this error, there should bnet down for maintenance or something...Help BLIZZARD !!!!!!!!!