I found an issue with MariaDB 10.0.x where missing/wrong connect to mysqli (Kloxo-MR using mysqli extension instead mysql extension).
When install mariadb 10.0.x with php52s, running 'lxphp.exe -m' (listing php extensions) not including mysqli and panel not able to accessed. But, when using mariadb 5.5 with php52s is otherwise.
So, I still thinking to convert mysqli code to pdo-mysql in Kloxo-MR and don't back to mysql code.