I noticed an entry in debug.log relating to search filter pro plugin:

[29-Jan-2015 11:36:33 UTC] PHP Notice: Trying to get property of non-object in C:\xampp\htdocs\horsehawkv2\wp-content\plugins\search-filter-pro\public\includes\class-search-filter-display-shortcode.php on line 652

Although the plugin does seem to be working, I am having issues with the ClassifiedEngine theme and several Taxonomies (custom fields) have disappeared. I don’t know if this is related, but it’s quite concerning as it’s a considerable amount of data…

Line 652 corresponds to the line:

$values['all_items_label'] = $taxonomydata->labels->all_items;

in the following segment of code:

private function get_taxonomy_field($field_data)
	{
		$returnvar = "";
		
		//set defaults so no chance of any php errors when accessing un init vars
		$defaults = array(
			'taxonomy_name'			=> '',
			'input_type'			=> '',
			'heading'				=> '',
			'all_items_label'		=> '',
			'operator'				=> '',
			'show_count'			=> '',
			'hide_empty'			=> '',
			'hierarchical'			=> '',
			'drill_down'			=> '',
			'order_by'				=> '',
			'order_dir'				=> '',
			'exclude_ids'			=> '',
			'sync_include_exclude'	=> '',
			'combo_box'				=> ''
		);
		
		$values = array_replace($defaults, $field_data);
				
		$taxonomydata = get_taxonomy($values['taxonomy_name']);
		
		if($values['all_items_label']=="")
		{
			$values['all_items_label'] = $taxonomydata->labels->all_items;
		}

What does this mean exactly and how can I fix it? Can anyone shed any light on this? Thanks.