Here's a quick and temporary fix I've done for several clients so the version check matches the WP install.
If you have cPanel or access to your WordPress files and, go to the wp_ozh_adminmenu.php file to edit the version check. It's found in the folder tree listed below:
/wp-content/plugins/ozh-admin-drop-down-menu/wp_ozh_adminmenu.php <--- Open in a text or code editor, then scroll to the bottom and look for this code on line 134:
if ( version_compare($wp_version, '3.2-beta1', '<') ) {
Then replace it with this code (simply change versions, like 3.1.4):
if ( version_compare($wp_version, '3.1.4', '<') ) {
Save the file, then re-activate the Ozh Admin Menu plugin in your WP admin. Enjoy!
Mike