gossterrible

Hi i had the same issue and i solved it by modifying the plugin code.
If you have any experience got to line 294 and edit the following

	function format_value( $value, $post_id, $field )
	{
		$value = (array) json_decode($value,true);
		$value = implode(',', $value);
		return $value;
	}

Hope it helps.