Server Error in '/' Application.

Parser Error

Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.

Parser Error Message: Unknown server tag 'uc1:left'.

Source Error:

Line 9:          <tr>
Line 10:             <td height="5">
Line 11:                 <uc1:left ID="left1" runat="server" />
Line 12:             </td>
Line 13:         </tr>

Source File: /house/zhongjie.aspx    Line: 11

Version Information: Microsoft .NET Framework Version:2.0.50727.3662; ASP.NET Version:2.0.50727.3668