Snapshot Error Message

I installed the Snapshot in a MU site today and I am getting this error message. I made a post on an already resolved post so I thought I had better start with a new request.
Unknown: errno:2 unlink(city-businessdirectory.com/wp-content/themes/directorypress/thumbs/snapshots/_backup/1340145116/wp_blog_versions.sql): No such file or directory /home/citybusi/public_html/wp-content/plugins/snapshot/snapshot.php on line 1989