I added the following to checkout_payment.php, and got it to work:
Before:
<body marginwidth="0" marginheight="0" topmargin="0" bottommargin="0" leftmargin="0" rightmargin="0">
After:
<body marginwidth="0" marginheight="0" topmargin="0" bottommargin="0" leftmargin="0" rightmargin="0" onload="java script:document.checkout_payment.payment[0].click();return true;">
I updated with the latest release, but now cannot redeem a voucher balance. Before the update I could redeem a voucher, but the balance in my account never decreased, now I have a balance, but cannot redeem.. Any ideas where to start to look...