Since Updating to WP 3.1, the Product theme no longer has an Appearance Menu

I'm running a multi site with WP 3.1 and BP 1.2.8.

I have tried to access http://uniimi.com/product/wp-admin/themes.php from three different accounts:
main site admin - works
main site author who is an admin for the blog in question - redirects to http://uniimi.com/showcase/wp-admin/?c=1
main site subscriber who is an admin for the blog in question - redirects to http://uniimi.com/showcase/wp-admin/?c=1

I have deactivated every plugin. I have done a manual update to 3.1 to ensure it was not an auto-update error.

I am not having this problem with any other theme. I was not having this problem before I updated to 3.1.

Please advise.