Custom taxonomies on Custom post Type

Hi !

I have created a custom post type and custom taxonomies for it, on the front end I can see the categories I created perfectly, however when I make the search the plugin just display results of the normal taxonomies from normal wordpress posts, it cant found the post from the categories on my custom taxonomies.

In the plugin configuration I selected to makes the search from the custom post type I created but its still not working.

Could you help me on that?

http://wordpress.org/plugins/ajax-wp-query-search-filter/