When I activated the plugin I couldn't see any place to change the options and add new pages.
Te problem is in line 70 of the file quote-rotator.php. You must just uncomment the line, and it works perfectly.
The line originally is like this:
//add_management_page('Quote Rotator', 'Quote Rotator', 10, basename(__FILE__), array(&$management, 'displayManagementPage'));
And you need to change it for this:
add_management_page('Quote Rotator', 'Quote Rotator', 10, basename(__FILE__), array(&$management, 'displayManagementPage'));
Hope this info is useful.
Cheers!