Firefox and punchout catalog

Hi,

we're using Firefox 24.04.0 ESR and I try to create a shopping cart from an external catalog. I open the catalog in the same screen, select my products and if I press the last check out button the session returns but I only get a white screen without my products. The process works fine with IE, seems to be an issue with Firefox (same issue with older versions).

Any idea which Firefox settings have to be changed to get this issue resolved?

Thanks

Hubert