SQL error after updating from 3.0.5 to 3.0.6 RC2

After upgrading my forum from 3.0.5, I now get this error when accessing the forums and/or ACP:

*SQL ERROR [ mysqli ]

Unknown column 'g.group_skip_auth' in 'where clause' [1054]*

When upgrading I opted to download the changed files and overwrote existing files with the new ones. The upgrade itself was flawless from what I seen.

NOTE: Sorry if this is the wrong place to post RC bugs, I did not see any other area to post them in

I can provide any necessary information, just ask for it. I'm not entirely sure what to post in this report, as there's no update-log of some sort.. sorry if I left any crucial details out.

-Jason