Financial Reports 4.0

I finally went live with 4.0 yesterday. But the person in accounting
said they are getting an error when they go to run their balance sheet
"one net income account is required". These reports worked fine in 3.0

Anyone have any ideas why I am getting this error and how do I fix it.
If it is easier to call me. Please do.

TIA.

Dina
Vamco International, Inc.
555 Epsilon Drive
Pittsburgh, PA 15238
(412) 963-7100

PS. I am running 4.0 - if did not get that in the subject line