Boot error message on Fed 15
 

Fed15 gets to the logon and then returns "unable to load Gnome session" after I enter my user and password. I have have checked entry very carefully. What can I do?

press ctrl + alt + F2 and login to terminal.

su - (login as root)

tail /var/log/errors (or similar)

it may be a different log in the /var/log directory

let us know any errors