settings are not visible.

[alexsandrius]

Redmine version 2.5.2.stable
Ruby version 1.9.3-p231 (2012-05-25) [i386-mingw32]
Rails version 3.2.19

[manuel-arguelles]

@alexsandrius you need to also install this: http://www.redmine.org/plugins/a_common_libs

[tdvsdv]

Use copy of the plugin from our site http://rmplus.pro/ru/redmine/plugins/single_auth