I’ve gone through the update process several times outlined here
http://ellislab.com/expressionengine/user-guide/installation/update.html
Updating from 2.5.2 to 2.7.0
The install finishes successfully, I’m able to view my homepage.. then when I go to my admin.php file to login.. I’m able to enter username and pass however after the redirect I get a generic “database Error” on admin.php. If I go back to the site front end page I’m shown the Database error below.
A Database Error Occurred
Error Number: 1054
Unknown column ‘fingerprint’ in ‘field list’
SELECT `member_id`, `admin_sess`, `last_activity`, `fingerprint`, `sess_start` FROM (`exp_sessions`) WHERE `session_id` = ‘a2a86debe8f813d186cab880859a0a8282a8ee9a’
Filename: libraries/Session.php
Line Number: 704
I have checked my file premissions several times and everything appears to be as it needs to be. Any help is greatly appreciated.