Jenny:
More than likely one of your choices is excluding all results, so make sure that all selection criteria are set to:
- from blank to zzzzzz
- .01 to 999,999,999.99
- Due date on or before = today's date.
If there is any outstanding invoices in your system to pay then this should be on the pre-cheque register.
I'm assuming that you have confirmed, via the Open Payables report, that there are in fact invoice outstanding and due for payment.
If this doesn't resolve your problem then you really need to get your Adagio consultant take a look with you to figure out what is going wrong.