Value of type 'System.Web.UI.HtmlControls.HtmlGenericControl' cannot be converted to 'System.Web.UI.HtmlControls.HtmlTableRow'.

I received the above error while compling a vb.net web site inside vs2012 that fully compiles under vs2010.

HTML markup is as follows:

<asp:Content ID="Content1" runat="Server" ContentPlaceHolderID="MainContentArea">

<table id="tblFirst" cellspacing="10" cellpadding="4" width="500" border="0" runat="server">
<tbody>
<tr>
<td >.....

Any ideas on how code should be altered in order to compile inside vs2012?

Thanks...