flexi auth - A user authentication library for CodeIgniter

[eluser]EyeAmN8[/eluser]
First off I want to say thank you for the great work!
I have flexi auth running on 2.1.4 with the exception of the login area(s).

When I try to login in it says

Input error: k: Format of site key was invalid

I have it logging on "1" and this is what it logs:

Code:

ERROR - 2014-02-13 22:56:49 --> Could not find the language line "You must login as an admin to access this area."
ERROR - 2014-02-13 22:58:45 --> Could not find the language line "You must login to access this area."

Any idea of what I need to do to get this working?

Thanks!