[SOLVED] Payment page at end of registration process not changing

Hi,

at the end of a registration process the customer sees the following screen when selecting cheque (offline) payment:



When he clicks on "OK", as expected a window with the payment slip opens.

However, the former window (the one with button "Click here to confirm that you are paying off-line..." remains unchanged. It used to display a confirmation page, but that's not happening anymore.





Would you have an idea what might be the reason?

Thanks!

For offline payments there is no confirmation page. It stays on that invoice page encase they need to re-open the payment slip (closed by accident, popup blocked, etc..).