I was under the impression that you could have a noble and an adventurer at the same time, active and all that in Dwilight. In fact, I distinctly remember I had an advy with my noble at the same time, but now the game tells me I already have that type of a character there.
Granted, the poor fellow I had there just recently died, but he does now show in the account menu anymore. So, is there a problem or do I just need to wait a bit longer?