[Lynne]

You've got a bunch of stuff at the top of your template that should not be there:

$usercss
$memberinfo_css
<style type="text/css" id="vbulletin_tabctrl_css">
@import url("clientscript/vbulletin_tabctrl.css?v=$vboptions[simpleversion]");
<if condition="$show['rtl']">@import url("clientscript/vbulletin_tabctrl_rtl.css?v=$vboptions[simpleversion]");</if>
</style>

there first line of that template should be:

$stylevar[htmldoctype]

You may compare you template to the default one by going to Edit your template and click on View History > Compare and seeing the differences.