Also same issue on all my servers.
Code:
L 07/03/2015 - 04:04:00: [admin-flatfile.smx] Error(s) detected parsing addons/sourcemod/configs/admins.cfg
L 07/03/2015 - 04:04:00: [admin-flatfile.smx] (line 7) Unknown group "root"
L 07/03/2015 - 04:04:00: [admin-flatfile.smx] (line 14) Unknown group "AA"
L 07/03/2015 - 04:04:00: [admin-flatfile.smx] (line 20) Unknown group "Admins"
L 07/03/2015 - 04:04:00: [admin-flatfile.smx] (line 27) Unknown group "Admins"
L 07/03/2015 - 04:04:00: [admin-flatfile.smx] (line 34) Unknown group "AA"
L 07/03/2015 - 04:04:00: [admin-flatfile.smx] (line 41) Unknown group "OG"
L 07/03/2015 - 04:04:00: [admin-flatfile.smx] (line 47) Unknown group "Moderator"
L 07/03/2015 - 04:04:00: [admin-flatfile.smx] (line 53) Unknown group "Admins"
L 07/03/2015 - 04:04:00: [admin-flatfile.smx] (line 60) Unknown group "Admins"
L 07/03/2015 - 04:04:00: [admin-flatfile.smx] (line 66) Unknown group "Admins"
L 07/03/2015 - 04:04:00: [admin-flatfile.smx] (line 72) Unknown group "OG"
L 07/03/2015 - 04:04:00: [admin-flatfile.smx] (line 78) Unknown group "Admins"
L 07/03/2015 - 04:04:00: [admin-flatfile.smx] (line 85) Unknown group "Admins"
L 07/03/2015 - 04:04:00: [admin-flatfile.smx] (line 91) Unknown group "Admins"
L 07/03/2015 - 04:04:00: [admin-flatfile.smx] (line 98) Unknown group "Moderator"
L 07/03/2015 - 04:04:00: [admin-flatfile.smx] (line 104) Unknown group "Admins"