Not Found: comment-rating-field-plugin/js/frontend.js

Hi, I’m trying to use the plugin but I got some difficulties getting it to work. The ratings aren’t saved in de database. Firebug is throwing me this exception:

404 Not Found – […]/wp-content/plugins/comment-rating-field-plugin/js/frontend.js?ver=2.0.1″

There is no such file in the plugin folder.

http://wordpress.org/plugins/comment-rating-field-plugin/