Uninstall LR4.4RC and then install LR4.4 clean. That should work. You are always asking for, let's call them 'issues', when playing around with RC releases. While Public release -> RC usually works fine, RC -> Public does not (same for most vendors, not only Adobe).
But there is something spooky with Creative Cloud and LR. I have LR4.3 installed with Adobe Application Manager (AAM). AAM won't let me update to the 4.4. version by claiming 'You're good. No new updates.'. But! It actually says Lightroom 4.4 - Up to date in AAM and I really have, according to About Lightroom, version 4.3. And yes, it does prompt me to download and install 4.4. the old fashion, manual kind of way. Hmmm....