[djbaxter]

You could try editing the plugin from your AdminCP.

This seems to be what it doesn't like (at the very end of the plugin code - PLUGIN not PRODUCT):

	$messagetext = preg_replace(
		'#(^|\[/(' . $skiptaglist . ')\])(.*(\[(' . $skiptaglist . ')|$))#siUe',
		"convert_url_to_bbcode_callback_auto_title('\\3', '\\1')",
		$messagetext
	);

No idea if this will work or not but you could try replacing that line with

	$messagetext = preg_replace_callback(
		'#(^|\[/(' . $skiptaglist . ')\])(.*(\[(' . $skiptaglist . ')|$))#siUe',
		"convert_url_to_bbcode_callback_auto_title('\\3', '\\1')",
		$messagetext
	);

WARNING: If this breaks your forum and you can't get to your AdminCP, disable hooks so you can edit it back.