Same thing here, just sits at the white box for me, fiance has an identical PC sitting next to me and hers works, so I am thinking this is not the PC but something server side, but what do I know.
http://nw-forum.perfectworld.com/showthread.php?43001-Issues-with-TeamViewer-and-Neverwinter Do you have teamviewer running? That was my problem and I had the same symptoms you did.
http://nw-forum.perfectworld.com/showthread.php?43001-Issues-with-TeamViewer-and-Neverwinter This was the problem, teamviewer causing the error. Disable teamviewer from your task tray and it works fine.
I am getting the same thing and the launcher does not show the server status as green. My fiance and I both have beta keys and we put in our login name and password and hit the red login button it immediately pops up a white box that says cryptic error oops and is asking to submit and error ticket basically, please help!