Thank you Doug and Steve. Bummer. Sadly, my guess is that I'm going to have to delete ALL of my data that I've already set up in GL & AP (and of course AR), and start from scratch.

I'm just disappointed, given that it took me a good few hours to set everything up, and then after doing it all, I get that error message, and even when deleting the AR data, and rekeying all of the setup there, it still gave me the same thing.

C'est la vie I guess. Just so frustrating....