showprofile.tpl:
line 16 and line 51 should be a div and no span:
<span style="float: left">
...table inside...
</span>
line 17, duplicate border tag:
<table border="0" border="0" cellpadding="0" cellspacing="0">
right before line 70 the closing td+tr is missing:
</td>
</tr>
{$tbclose}
line 74 should be a closing div:
</span>
showprofile.inc.php, in line 252 the closing td+tr are unnecessary:
</td></tr><tr><td valign='top'>