1. tons of warnings: attribute_escape není podporováno už od verze 2.8! Použijte místo toho raději esc_attr(). in /wp-includes/functions.php on line 3297
2. <b>Notice</b>: is_feed was called incorrectly. Conditional query tags do not work before the query is run. Before then, they always return false. (This message was added in version 3.1.) in <b>//wp-includes/functions.php</b> on line <b>3416</b>
3. using nonstandard /nonoptimal folder for cache /wp-minify/cache/ - so on secured systems it means that after instalation we have to make it writable, what i will definitely not do. Use /wp-content/something instead (e.g. /wp-content/cache or make it modifable
4. even worse - also config.php have to be writtable - this is absolutely no-no for any plugin to have writable rights to some php.
so use wp-debug true before posting a plugin.