I'm running WP 3.5.1 and the plugin version is 1.0.1.
1 = The plugin creates a folder called "wp-file-permission-check". However the 'wp_register' code on lines 33 and 34 refer to "file-permission-check".
2 = The file permissions displayed for files in the wp-admin folder (I haven't tested wp-content and wp-includes") are incorrect. This is because the $fileinfo variable which declared for the "root" folder is inadvertently re-used in the wp-admin folder BUT is not reset beforehand.
The objectives for this plugin seemed worthwhile but it simply does NOT work as advertised. I suggest that you don't use this plugin until it has had a major revision.