Unexpected end of file looking for

Can anyone tell me why I am getting this error code:
Unexpected end of file looking for </div> tag
for the second line in the code shown below:
the error is on the line that says:
<div id="divRateReturnBlock" runat="server" visible="false">


<!-- START Rate Return -->
    <div id="divRateReturnBlock" runat="server" visible="false">
        <div id="divMessage" runat="server" />
        <br /><br />
        <div style="width: 480px;">
            <table id="tblCarriers" style="width: 460px;" runat="server">
          &nbs ...