[toxin]

I'm pulling my hair out over this..

I've been running PAN successfully for ages, integrated into 3.0.7, but a couple of days ago I upgraded to vB 3.5.1 and moved to a new server..

I know PAN is working because i can invoke the banners manually or through my own php scripts, but vB isn't having any of it.

There are no errors, no banners.. no nothing.. its all a bit strange.

This is part of my header template:

<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="50%"><a href="/?$session[sessionurl]"><img src="$stylevar[titleimage]" border="0" alt="$vboptions[bbtitle]" /></a></td>
<td width="50%"><div align="center">xxx<ad what="zone:1" />yyy</div></td>
</tr>
</table>

so this should show a banner, with text "xxx" before and "yyy" after. But when I view source on the forum webpage, i see this:

<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="50%"><a href="/?"><img src="/forums/images/misc/vbulletin3_logo_winter.gif" border="0" alt="Community Home Page" /></a></td>
<td width="50%"><div align="center">xxx
</tr>
</table>

notice that everything after xxx has vanished... ie, no banner and no "yyy"

Does anyone have any ideas of something that I can try, or where to start debugging?