Possilble to work with MDTF plugin?

Hello,

I would like to use your plugin on custom post type archives and it works, but if I add MDTF widget to search my posts by custom taxonomies, ajax load more doesn’t work anymore..

If I’m trying to filter by taxonomy i have the following error:
Recoverable fatal error: Object of class WP_Error could not be converted to string in ……/wp-content/plugins/ajax-load-more/core/classes/class.alm-shortcode.php
on line
514

If i use search text input, there’s a problem that even if I found interesting custom post “ajax load more” loads also ALL other posts below..

Thanks for any help,
Piotr