Can't get a category RSS feed from a member site.

The following site is a member site on my BuddyPress install.

I am trying to get a category RSS feed from it but am failing. According to the WordPress codex, this should do the trick:

but all it does is display the home page. "video" is a valid category on the site. The member is using the free iNove theme downloaded from the WordPress site. Any help will be appreciated!