display certain category on custom template page

You should not use category parameter to query custom taxonomy instead you should use tax_query parameter or directly custom taxonomy name as shown in the following query. query_posts( array( ‘post_type’ => ‘ublalfieportfolio’, ‘ublalfieportfolio-categories’ => ‘parketten’, ‘posts_per_page’ => -1) ); Refer this page to know how to use custom taxonomy parameter in custom query.

Customized Comment Form Issues

You can unset this field like that : function wpse_109744_comment_form_fields($fields) { if(isset($fields[‘url’])) unset($fields[‘url’]); } $fields [’email’] = ‘your markup’; $fields [‘author’] = ‘your markup’; $return $fields; add_filter(‘comment_form_default_fields’, ‘wpse_109744_comment_form_fields’) EDIT :

Issues with Post 2 Post Plugin

Your error message is discused at this site: http://old.support.advancedcustomfields.com/discussion/5953/declaration-of-acf_taxonomy_field_walkerstart_el/p1 in short they fixed a bug in the addon: wp-content/plugins/advanced-custom-fields/core/fields/taxonomy.php row/line 419: function start_el( &$output, $term, $depth, $args = array(), $current_object_id = 0) wp-content/plugins/advanced-custom-fields/core/fields/taxonomy.php row/line 442: function end_el( &$output, $term, $depth = 0, $args = array() )