Upgrade D6.24 to D7.10: Uncaught Exception thrown in session handler.
I have successfully followed steps 1-16 (http://www.ostraining.com/blog/drupal/migrate-drupal-6-to-drupal-7/).
All the modules I have remaining on my D6.24 is available or in development for D7.10. I attempt update.php, and get the following error:
Uncaught exception thrown in session handler.
PDOException: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'ssid' in 'where clause': SELECT 1 AS expression FROM {sessions} sessions WHERE ( (sid = :db_condition_placeholder_0) AND (ssid = :db_condition_placeholder_1) ) FOR UPDATE; Array ( [:db_condition_placeholder_0] => fgp2ivolbmbg4o056asqvncki1 [:db_condition_placeholder_1] => ) in _drupal_session_write() (line 206 of /h1/degecom/public_html/staging/includes/session.inc).
I have similar problems to many of the comments on: http://drupal.org/node/1053684. But there is no definite solution.