Yes, I discovered this when I upgraded to rc1. I've tried to contact the developer, I've posted on the plugin support forum, but to no avail. I actually donated to the development of this plugin, so this is a huge letdown. I relied heavily on the plugin for our site, so I've decided to abandon the Flickr Manager plugin completely. Sadly, there are all kind of Flickr plugins available, but none even compare to the functionality that Flickr Manager had. Whole knows, maybe somebody will pick it up and keep developing it. Let me know if you come across an alternative and I'll do the same for you.