The same Problem on my Board.
private_messagelist_start
has following Content:
Code:
require_once(DIR . '/includes/class_template_parser.php');
$parser = new vB_TemplateParser('{vb:raw pm.title}</a>');
$parser->dom_doc = new vB_DomDocument($parser->fetch_dom_compatible());
$find = trim($parser->_parse_nodes($parser->dom_doc->childNodes()));
$parser = new vB_TemplateParser('{vb:raw pm.title}</a> <div>{vb:raw pm.preview}</div>');
$parser->dom_doc = new vB_DomDocument($parser->fetch_dom_compatible());
$replace = trim($parser->_parse_nodes($parser->dom_doc->childNodes()));
$vbulletin->templatecache['pm_messagelistbit'] = str_replace($find, $replace, $vbulletin->templatecache['pm_messagelistbit']);