Diablo III: Blizzard looking into game-breaking Error 3006
Blizzard has confirmed it's looking into a fix for Error 3006 for Diablo III after players who encounter the bug get kicked out of the game and are unable to log back in.
Reports from players on EG and Battle.net say the bug happens when you swap gear with a templar follower.
Some users have been locked out of Battle.net completely, apparently. The bug could be tied specifically into the Demon Hunter class. according to players.
Whilst Blizzard is looking into the matter, a temporary workaround for now is simple: don't swap anything the templar follower. So don't do that.
Diablo III is out now. Watch last night's launch festivities in London here.