Ticket #13460: 13460.diff

wp-admin/import/wp-cat2tag.php

@@ -260 +260 @@
                                         if ( ! ($id = is_term( $category->slug, 'post_tag' ) ) )
                                                 $id = wp_insert_term($category->name, 'post_tag', array('slug' => $category->slug));
 
+                                        if ( is_wp_error($id) ) {
+                                                echo $id->get_error_message() . "</li>\n";
+                                                continue;
+                                        }
+
                                         $id = $id['term_taxonomy_id'];
                                         $posts = get_objects_in_term($category->term_id, 'category');
                                         $term_order = 0;