Unable to login to wordpress to edit.

I did a network upgrade and now when i try to login to the backside of wp on the site i get the following error.
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 3072 bytes) in /home/salonsite/public_html/wp-admin/includes/deprecated.php on line 899
http://www.showoffmysalon.com/wp-admin