Bill,
Since you moved your site. You may want to follow Gizmo's instruction to clear cache.
Also include the sessions folder(except for the index files as noted)
But you may want to take a gander at your includes/config.inc.php file.
And double check all the paths are correct. especially for the sessions folder. This is one item that is not in the control panel.The only time you set it is when you install for the first time.
