2 hours later... solved!
I'm not sure what the issue was.
I made a fresh install of beta 10. Connected it to a fresh database and imported my database from before I ran the original update. I copied over my /assets/avatars, files, and fonts and after some configuration of the domain url, config.php, flaurm, and the other files I was able to make this work.
I had to reinstall all my plugins manually, but most of them seem to work... and thankfully all my settings were imported alongside the sql importation.