iPrint Appliance missing plugin on a Mac

hi all,

trying to upload a driver to the driver store.
when I select the "drivers" tab, "additional plugins are required to display all the media on this page"

I checked, tools - add-ons - plugins on firefox and the novell iprint plugin is there......I assume this should be all you need.
version is 1.1 - client is 5.72

Mac version is 10.7.5

thanks is advance........