[GNC] Can't post an Invoice, no post to account?

[John Whitmore]

Sorry I might have missed something in an update or perhaps it's due to the
version installed on this new OS Install. In the past I've never had a problem
posting an invoice, and selecting the "Accounts payable" account. Now when I
go to post an invoice there's no available account to pay into but I can add a
new one.

I'm not sure if I should create a new account or if that'll mess the data I
already have. Any advice would be very gratefully received.