Don’t know if this will fix your entire error message concerning this plugin, but the category-template.php error has been noted with the 4.4 release. As James Huff pointed on WordPress 4.4 Master List a few hours ago, a patch for this problem has been made:
https://core.trac.www.ads-software.com/attachment/ticket/34723/34723.patch
To fix, open your category-template.php and replace lines 1144 – 1158…
function get_the_terms( $post, $taxonomy ) {
if ( ! $post = get_post( $post ) )
return false;
$terms = get_object_term_cache( $post->ID, $taxonomy );
if ( false === $terms ) {
$terms = wp_get_object_terms( $post->ID, $taxonomy );
$to_cache = array();
foreach ( $terms as $key => $term ) {
$to_cache[ $key ] = $term->data;
}
wp_cache_add( $post->ID, $to_cache, $taxonomy . '_relationships' );
}
$terms = array_map( 'get_term', $terms );
…with the new code from the patch:
function get_the_terms( $post, $taxonomy ) {
if ( ! $post = get_post( $post ) )
return false;
$terms = get_object_term_cache( $post->ID, $taxonomy );
if ( false === $terms ) {
$terms = wp_get_object_terms( $post->ID, $taxonomy );
if ( ! is_wp_error( $terms ) ) {
$to_cache = array();
foreach ( $terms as $key => $term ) {
$to_cache[ $key ] = $term->data;
}
wp_cache_add( $post->ID, $to_cache, $taxonomy . '_relationships' );
}
}
if ( ! is_wp_error( $terms ) ) {
$terms = array_map( 'get_term', $terms );
}
So is now line 1144 – 1162. This fix will be included in the future 4.4.1 I suppose
