Are you launching from an old bookmark? If so check that it has the www in it. Sometimes Tom updates the main page and it reverts back to no www in the address. Wow... just noticed the new home page. Nice Tom!
Anyway, I recently set it to forward tartan37.com to
www.tartan37.com so the cookies would stay consistant. If messing with the address doesn't work, try deleting the cookie and starting over. (and of course your settings have to allow for cookies.)
If you need help finding the cookie, let me know.