Snapshot error

I did a manual FTP updoad of the plugin to a 3.2 Wordpress install. Snapshot items show up in the Admin area, but when any item is selected, the following error occurs...

Fatal error: Call to undefined method stdClass::add_help_tab() in /home/aug4cast/public_html/wp-content/plugins/snapshot/snapshot.php on line 1303

It does not crash wordpress, and I can simply click the back browser to return to the Admin panel.