Assuming your Trial Balance is in proof, then most likely an account was added and not added to Financial Statements. When this happens, I usually find it by scanning the Trial Balance. It's usually one number that will be in current activity. If that fails, compare this month's TB to last month's for a new account(s). Worst case is looking at the FS set up and add the TB accounts to see what's missing.

Thanks!  I'll work that now.

Thanks.  After another similar comment, I spent the better part of a day looking for an account like that. 

I eventually called the help desk.  There is something out of balance somewhere (!! double-exclamation points).   It's something in Accounts Payable.

Thanks, much.