at first, thank you for these useful and simple plugin.
While i updated some of my WP-Sites i detected an fatal error.
Parse error: syntax error, unexpected '[' in /.../wp-content/plugins/php-enkoder/enkoder.php on line 438
After the update Backend & Frontend were not available. I fixed this by deleting the plungin via ftp and upload the old plugin folder again.
Probably something is wrong.