Opera RC does not list unite in panel?

I just heard about the new cloud-computing service by Opera called Unite. You down load it from the Opera labs page. I installed it. It was working with my old Opera. The same day, I installed Opera 10 release candidate. But that does not show Unite in the panels. The Unite video is a demo on this new release so I know it’s compatible. I’ve tried un-installing the old Opera but whenever I try to download the Unite MSI build, it automatically installs the last version that I uninstalled. It’s very annoying and now I have two versions of Opera on my computer. Here’s the link

Please help before I go crazy!