The "Commandline Format" should be "*"https://%s*"" (i.e. the same as for the OWB entry). You might also want to make sure that you are using the latest version of Odyssey.
Sorry to hijack the (old) thread, but I'm also having trouble "checking out" when trying to buy the RadeonHD v2.4 offering. The URL prefs are set up and Odyssey opens with the checkout page but it just tells me there's an "Error initiating AMIStore Checkout" and to check I'm logged in to the client, which I am because it's "waiting for funds [...] payment in browser". Aside from the logo and "Checkout" title, there's no other info on screen. Do I have to set up anything else? Any ports on a firewall or the like? The query string for the checkout contains the uid, currency of GBP and an empty sid - if that helps any.
It also fails in OWB (and Netsurf, but that was expected) so I'm suspecting it is more store client related than browser.
Thanks for any help.
Edit: Never mind, after 5 days of not working, it has sprung into life tonight without me changing anything. The magic of software :)