[Plugin: Instagram for WordPress] I cant get this plugin to work

http://wordpress.org/support/plugin/instagram-for-wordpress

I cant use this anymore ive updated to the latest version and i put my ID in and everything but when i click save after instagram comes up to authenticate it then goes to “http://samsblog.info/wp-content/plugins/instagram-for-wordpress/authenticationhandler.php?code=3fddea7085ac45d382613da1d059ba66” but this page is not found i dont know what to do