I had a thread open in Unity Support earlier about this issue too but never got it resolved so just wanted to see if I can get some more help from here 
So to be specific, my Unity WebPlayer game isn’t working at all on IE 9.0 (I get an error which says Data file is currupt(Not a valid Unity Player file)) it bugs out on Forefox 8.0 (Have to refresh like 5 times before the game loads fully).
So this is my code that is on the webpayer.html file:
<?php
$app_id = "xxxxxxx";
$canvas_page = "https://apps.facebook.com/the_rsg/";
$auth_url = "http://www.facebook.com/dialog/oauth?client_id="
. $app_id . "&redirect_uri=" . urlencode($canvas_page);
$signed_request = $_REQUEST["signed_request"];
list($encoded_sig, $payload) = explode('.', $signed_request, 2);
$data = json_decode(base64_decode(strtr($payload, '-_', '+/')), true);
if (empty($data["user_id"])) {
echo("<script> top.location.href='" . $auth_url . "'</script>");
}
else {
$pageContent = file_get_contents('http://graph.facebook.com/' . $data["user_id"]);
$parsedJson = json_decode($pageContent);
$user_id = $parsedJson->id;
$user_name = $parsedJson->name;
session_start();
$_SESSION['UserID'] = $user_id;
}
//$IDexists = "false";
$db = mysql_connect('localhost', 'xxx', 'xxx') or die('Could not connect: ' . mysql_error());
mysql_select_db('xxx') or die('Could not select database');
//$hash = $_GET['hash'];
//$secretKey="xxx"; # Change this value to match the value stored in the client javascript below
//$real_hash = md5($UserID . $Level . $CheckpointsArray . $secretKey);
//if($real_hash == $hash) {
$query = "SELECT * FROM `RSG_SaveData` ORDER by `UserID` DESC LIMIT 5";
$result = mysql_query($query) or die('Query failed: ' . mysql_error());
$num_results = mysql_num_rows($result);
for($i = 0; $i < $num_results; $i++) {
$row = mysql_fetch_array($result);
if ($row['UserID'] == $user_id) {
$IDexists = "true";
}
}
if ($IDexists == "true") {
$IDexists = "true";
}
else {
$IDexists = "false";
}
if($IDexists == "false") {
// Send variables for the MySQL database class.
$query_third = "INSERT INTO `RSG_SaveData`(`UserID`, `UserName`, `Level`, `CheckpointsArray`) VALUES('$user_id', '$user_name', '$Level', '$CheckpointsArray')";
$result_third = mysql_query($query_third) or die('Query failed: ' . mysql_error());
}
//for($i = 0; $i < $num_results; $i++) {
//if ($row['UserID'] == 0) {
//$query_second = "DELETE FROM `RSG_SaveData` WHERE `UserID`=0";
//$result_second = mysql_query($query_second) or die('Query failed: ' . mysql_error());
//}
//}
//}
?>
<html>
<head>
<title>Unity Web Player - webplayer</title>
<script language='VBScript'>
function DetectUnityWebPlayerActiveX
on error resume next
dim tControl, res, ua, re, matches, major
res = 0
set tControl = CreateObject("UnityWebPlayer.UnityWebPlayer.1")
if IsObject(tControl) then
if tControl.GetPluginVersion() = "2.5.0f5" then
' 2.5.0f5 on Vista and later has an auto-update issue
' on Internet Explorer. Detect Vista (6.0 or later)
' and in that case treat it as not installed
ua = Navigator.UserAgent
set re = new RegExp
re.Pattern = "Windows NT (\d+)\."
set matches = re.Execute(ua)
if matches.Count = 1 then
major = CInt(matches(0).SubMatches(0))
if major < 6 then
res = 1
end if
end if
else
res = 1
end if
end if
DetectUnityWebPlayerActiveX = res
end function
</script>
<script language="javascript1.1" type="text/javascript">
function GetUnity () {
if (navigator.appVersion.indexOf("MSIE") != -1 navigator.appVersion.toLowerCase().indexOf("win") != -1)
return document.getElementById("UnityObject");
else if (navigator.appVersion.toLowerCase().indexOf("safari") != -1)
return document.getElementById("UnityObject");
else
return document.getElementById("UnityEmbed");
}
function DetectUnityWebPlayer () {
var tInstalled = false;
if (navigator.appVersion.indexOf("MSIE") != -1 navigator.appVersion.toLowerCase().indexOf("win") != -1) {
tInstalled = DetectUnityWebPlayerActiveX();
}
else {
if (navigator.mimeTypes navigator.mimeTypes["application/vnd.unity"]) {
if (navigator.mimeTypes["application/vnd.unity"].enabledPlugin navigator.plugins navigator.plugins["Unity Player"]) {
tInstalled = true;
}
}
}
return tInstalled;
}
function GetInstallerPath () {
var tDownloadURL = "";
var hasXpi = navigator.userAgent.toLowerCase().indexOf( "firefox" ) != -1;
// Use standalone installer
if (1)
{
if (navigator.platform == "MacIntel")
tDownloadURL = "http://webplayer.unity3d.com/download_webplayer-2.x/webplayer-i386.dmg";
else if (navigator.platform == "MacPPC")
tDownloadURL = "http://webplayer.unity3d.com/download_webplayer-2.x/webplayer-ppc.dmg";
else if (navigator.platform.toLowerCase().indexOf("win") != -1)
tDownloadURL = "http://webplayer.unity3d.com/download_webplayer-2.x/UnityWebPlayer.exe";
return tDownloadURL;
}
// Use XPI installer
else
{
if (navigator.platform == "MacIntel")
tDownloadURL = "http://webplayer.unity3d.com/download_webplayer-2.x/UnityWebPlayerOSX.xpi";
else if (navigator.platform == "MacPPC")
tDownloadURL = "http://webplayer.unity3d.com/download_webplayer-2.x/UnityWebPlayerOSX.xpi";
else if (navigator.platform.toLowerCase().indexOf("win") != -1)
tDownloadURL = "http://webplayer.unity3d.com/download_webplayer-2.x/UnityWebPlayerWin32.xpi";
return tDownloadURL;
}
}
function AutomaticReload () {
navigator.plugins.refresh();
if (DetectUnityWebPlayer())
window.location.reload();
setTimeout('AutomaticReload()', 500)
}
</script>
</head>
<body>
<center>
<script language="javascript1.1" type="text/javaScript">
var hasUnity = DetectUnityWebPlayer();
var brokenUnity = false;
if (hasUnity) {
document.write('<object id="UnityObject" classid="clsid:444785F1-DE89-4295-863A-D46C3A781394" width="600" height="450"> \n');
document.write(' <param name="src" value="webplayer.unity3d" /> \n');
document.write(' <embed id="UnityEmbed" src="webplayer.unity3d" width="600" height="450" type="application/vnd.unity" pluginspage="http://www.unity3d.com/unity-web-player-2.x" /> \n');
document.write('</object>');
// if Unity does not define to GetPluginVersion on Safari on 10.6, we presume the plugin
// failed to load because it is not compatible with 64-bit Safari.
if (navigator.appVersion.indexOf("Safari") != -1
navigator.appVersion.indexOf("Mac OS X 10_6") != -1
document.getElementById("UnityEmbed").GetPluginVersion == undefined)
brokenUnity = true;
// 2.5.0 cannot auto update on ppc. Treat as broken.
else if (document.getElementById("UnityEmbed").GetPluginVersion() == "2.5.0f5"
navigator.platform == "MacPPC")
brokenUnity = true;
}
if (!hasUnity || brokenUnity) {
var installerPath = GetInstallerPath();
if (installerPath != "") {
// Place a link to the right installer depending on the platform we are on. The iframe is very important! Our goals are:
// 1. Don't have to popup new page
// 2. This page still remains active, so our automatic reload script will refresh the page when the plugin is installed
document.write('<div align="center" id="UnityPrompt"> \n');
if (brokenUnity)
document.write(' <a href= ' + installerPath + '><img src="http://webplayer.unity3d.com/installation/getunityrestart.png" border="0"/></a> \n');
else
document.write(' <a href= ' + installerPath + '><img src="http://webplayer.unity3d.com/installation/getunity.png" border="0"/></a> \n');
document.write('</div> \n');
// By default disable ActiveX cab installation, because we can't make a nice Install Now button
// if (navigator.appVersion.indexOf("MSIE") != -1 navigator.appVersion.toLowerCase().indexOf("win") != -1)
if (0)
{
document.write('<div id="InnerUnityPrompt"> <p>Title</p>');
document.write('<p> Contents</p>');
document.write("</div>");
var innerUnityPrompt = document.getElementById("InnerUnityPrompt");
var innerHtmlDoc =
'<object id="UnityInstallerObject" classid="clsid:444785F1-DE89-4295-863A-D46C3A781394" width="320" height="50" codebase="http://webplayer.unity3d.com/download_webplayer-2.x/UnityWebPlayer.cab#version=2,0,0,0">\n' +
'</object>';
innerUnityPrompt.innerHTML = innerHtmlDoc;
}
document.write('<iframe name="InstallerFrame" height="0" width="0" frameborder="0"></iframe>\n');
}
else {
document.write('<div align="center" id="UnityPrompt"> \n');
if (brokenUnity)
document.write(' <a href="javascript: window.open("http://www.unity3d.com/unity-web-player-2.x"); "><img src="http://webplayer.unity3d.com/installation/getunityrestart.png" border="0"/></a> \n');
else
document.write(' <a href="javascript: window.open("http://www.unity3d.com/unity-web-player-2.x"); "><img src="http://webplayer.unity3d.com/installation/getunity.png" border="0"/></a> \n');
document.write('</div> \n');
}
// hide broken player
if (brokenUnity)
document.getElementById("UnityEmbed").height = 0;
// Reload when detected unity plugin - but only if no previous plugin is installed
// - in that case a browser restart is needed.
if (!brokenUnity)
AutomaticReload();
}
</script>
<noscript>
<object id="UnityObject" classid="clsid:444785F1-DE89-4295-863A-D46C3A781394" width="720" height="600" codebase="http://webplayer.unity3d.com/download_webplayer-2.x/UnityWebPlayer.cab#version=2,0,0,0">
<param name="src" value="webplayer.unity3d" />
<embed id="UnityEmbed" src="webplayer.unity3d" width="720" height="600" type="application/vnd.unity" pluginspage="http://www.unity3d.com/unity-web-player-2.x" />
<noembed>
<div align="center">
This content requires the Unity Web Player
<a href="http://www.unity3d.com/unity-web-player-2.x">Install the Unity Web Player today!</a>
</div>
</noembed>
</object>
</noscript>
</center>
</body>
</html>
The strange thing is, it works fine when I load the game locally from IE but yeah doesn’t work when I upload it try to load it 
Any help will be greatly appreciated since I really need to get this working! Cheers!