Hello,
I searched the technical assistance forums but couldn't locate a thread on this, and seems like the knowlege base is down right now too, so I thought I would post for an answer here.
I use Vista Ultimate and will have to log in to DDO two times before it will actually connect. The first time it will go through the launcher and then a black screen, there will be a pop up message in the lower right of the screen about the screen resolution and then back to desk top. The second time goes into the game.
Is there a fix for this? My version of the game is a digital download upgraded from the trial to a paid subscription.