upgrading pre-RC1 to RC3

i'm having problems upgrading my pre-RC1 vanilla 2 to the latest RC3. i've created an issue on git hub describing the problem: http://github.com/vanillaforums/Garden/issues#issue/430.
in short, i'm getting database errors. is their an easier way to upgrade the schemas that have changed without having to navigate to a URL that never seems to work for me?
ideally, i would like to backup my db, wipe out the old vanilla 2, install the latest rc3 and then migrate my db into the new install. any ideas?
in short, i'm getting database errors. is their an easier way to upgrade the schemas that have changed without having to navigate to a URL that never seems to work for me?
ideally, i would like to backup my db, wipe out the old vanilla 2, install the latest rc3 and then migrate my db into the new install. any ideas?
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