I installed codoforum to test it out and get a feel for it before I implement it but it seems when I try to turn SSO on and save the settings I get an error "Feed Not Found". I noticed when I went to the admin backend the first time it wasnt SSL so I used the SSL address and tested again but the error is the same. The database doesnt have the configuration saved either.

NOTE: It would be nice to have a backend login and a front end login so when I am logged into the backend the front end isnt logged in.

I installed codoforum to test it out and get a feel for it before I implement it but it seems when I try to turn SSO on and save the settings I get an error "Feed Not Found".

Can you post a screenshot ?
We have not defined any such error.