Please upgrade to 2.1.x here.
The 2.0 branch is no longer being updated.
Current version is 2.1.11
, released 12 June.
Registration Broken / Birthday Year
It seems that the latest version of Vanilla has introduced a bug that results in the year not being listed on the registation forum. Because it isn't listed, it means that no new user can register. Take a look at the registration form here:http://forum.wbpsystems.com/entry/