I have a report with several checks and each check has invoices attached. I am trying to make print each check twice.

Here is how everything is setup.
I have a group for the invoices with 2 detail sections. The first one has a formula to insert a page after the current invoice if the next invoice is part of a different check.
(Next({checkhed.Calc_DspCheckNum}) <> {checkhed.Calc_DspCheckNum})
The second detail section just has a subreport that is only shown on even pages.

The problem that I am having is that the last check isn't being duplicated. It seems like the formula isn't running for the last invoice.

Anyone have any idea whats going on?                     

Well that fixed part of the problem.   The formula is now working and returning true but am still not getting a duplicated page.

The last page that I get is page 21 which has detail A that has the formula to insert a new page. (Detail A is shown on odd numbered pages)

That isn't working either. I have a field showing the result of the formula and on the last record of the last page it shows true, so I have no clue why a new page isn't being created.