Until you said you logged inand played for 10 minutes before it happened again, it sounded like the common DX10 issue that has hit a lot of people.
But they usually can't get that far, just hat beginning part that you mentioned.
That error is generally related to a graphics problem.
You can try, and i dunno if that'll work, but at your char screen I think you can access your game options.
open them, uncheck DX10 and drop your graphics to low quality.
Save it and log in.
Play for a few minutes, port to the kinhouse, let the stuff all load, etc, and then log off.
Created a new character play through the opening sequence a bit.
Then reset your graphics to where they were and log back in.
This, in theory, should give the game server, and your computer time to exchange information regarding your settings, and fix any conflicts that occured over whatever time.