they have worked on every issue with that error you posted to date from the feedback..
only posted the 2 because of the issue of older or newer servers..
but looking now seems that's not the cause
did you do the template change posted in that link?
is your style custom or stock ?
those lines in the arcade.php are
Code:
$bbcode_parser =& new vB_BbCodeParser($vbulletin, fetch_tag_list());
from that, I would change the template
the ARCADE template (not the ARCADE_vB4 template) to
Code:
{vb:stylevar htmldoctype}
<html xmlns="http://www.w3.org/1999/xhtml" dir="{vb:stylevar textdirection}" lang="{vb:stylevar languagecode}" id="vbulletin_html">
<head>
<meta http-equiv="Pragma" content="no-cache" />
<meta http-equiv="Expires" content="-1" />
<meta http-equiv="Cache-Control" content="no-cache" />
<title>{vb:raw ibprotitle}</title>
{vb:raw headinclude}
{vb:raw headinclude_bottom}
{vb:cssfile ARCADE.css}
</head>
<body>
{vb:raw header}
{vb:raw navbar}
{vb:raw template_hook.champss_inarcade}
{vb:raw arcadeheader}
{vb:raw maincontent}
{vb:raw footer}
</div>
</body>
</html>