We've just released updates for Remote Buddy, Candelair and Remote Control Diagnostics that improve compatibility with OS X Yosemite betas and fix an issue with Mavericks as well.
OS X Yosemite is still in beta and a final public release (GM) is probably still months away. So for now, it's not yet technically possible to claim official support for Yosemite. We hope to have fully compatible versions available at the time of OS X Yosemite's public release, though.
If you're among those testing OS X Yosemite as a developer or beta tester and you experience any issues using Remote Buddy with that OS X release, please let us know by email or Twitter.