Please ensure that you have regenerated the license identity and update it to licenses.islicx file as if you made any changes to the Silverlight assembly.

It is recommended that you perform the licensing process at the time when your Silverlight application is ready to deploy.

Hi Yudi!

Thank you for the quick response.  I'm currently testing with a trial version of your product.  This appears to be a Silverlight XAP issue.  I did go ahead and increment the build number on the Silverlight app and that seems to fix the problem *If* the use refreshes the browser.

I guess i'm looking for more granual way to check for updates.  e.g. if a UXPage within a XAP changes is there a way to determine if the page itself is old and refresh it...versus re-loading the entire XAP via browser refresh.  Any help here would be much appreciated.

You can append the source url in the object tag with the last-write date of the XAP file. Replace the object tag in your aspx page with the following:

<object data="data:application/x-silverlight-2," type="application/x-silverlight-2"
    width="100%" height="100%">
    <%
        string orgSourceValue = @"ClientBin/Your.xap";
        string param;
        if (System.Diagnostics.Debugger.IsAttached)
            param = "<param name=\"source\" value=\"" + orgSourceValue + "\" />";
        else
        {
            string xappath = HttpContext.Current.Server.MapPath(@"") + @"\" + orgSourceValue;
            DateTime xapCreationDate = System.IO.File.GetLastWriteTime(xappath);
            param = "<param name=\"source\" value=\"" + orgSourceValue + "?ignore=" + xapCreationDate.ToString() + "\" />";
        }
        Response.Write(param);
    %>
    <param name="onError" value="onSilverlightError" />
    <param name="background" value="white" />
    <param name="minRuntimeVersion" value="4.0.50401.0" />
    <param name="autoUpgrade" value="true" />
    <a href="http://go.microsoft.com/fwlink/?LinkID=149156&v=4.0.50401.0" style="text-decoration: none">
        <img src="http://go.microsoft.com/fwlink/?LinkId=161376" alt="Get Microsoft Silverlight"
            style="border-style: none" />
    </a>
</object>

Append XAP created data to the value on the Source parameter, this way when you have a newer version of XAP, the new XAP will get downloaded to replace the one in the cache.

Thank you!  I'll give that a try.