Just FYI - when I try to open a file using the AVR in IE 8 I get a pop up with this error (source html - may give you a clue)
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "
www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="
www.w3.org/1999/xhtml" xml:lang="en-gb" lang="en-gb" dir="ltr">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<meta name="robots" content="index, follow" />
<meta name="keywords" content="Hope Chapel, Charismatic, Austin, Worship" />
<meta name="description" content="Hope Chapel, Independent, Charismatic community of believers in Austin, TX" />
<meta name="generator" content="Joomla! 1.5 - Open Source Content Management" />
<title>Listening To Hope</title>
<style type="text/css">
<!--
html, body {background-color:#000;border:0px;padding:0px;margin:0px;width:100%;height:100%;}
-->
</style>
<script type="text/javascript" src="/media/system/js/mootools.js"></script>
<script type="text/javascript" src="/plugins/content/avreloaded/silverlight.js"></script>
<script type="text/javascript" src="/plugins/content/avreloaded/wmvplayer.js"></script>
<script type="text/javascript" src="/plugins/content/avreloaded/swfobject.js"></script>
<script type="text/javascript" src="/plugins/content/avreloaded/avreloaded.js"></script>
</head>
<body class="contentpane">
<!-- AVRSYS_IN_POPUP --><!-- PLG_CLIPBOARD_DISABLE --><span style="color:red"><b>Popup database error</b></span>
</body>
</html>
