Hi

I opened the default.aspx in the vs2005 but i got two errors saying:
Type "ProfileCommon" is not defined.
on line:
<%@ Page Language="VB" MasterPageFile="~/MasterPage.master" CodeFile="Default.aspx.vb"
    Inherits="Default_aspx" Title="Welcome" %>

and also i got errors:
Error    3    Element 'FeaturedAd' is not a known element. This can occur if there is a compilation error in the Web site.    C:\Inetpub\newwwwroot\ad\Default.aspx    36    18    http://ad/
Error    4    Element 'CategoryBrowse' is not a known element. This can occur if there is a compilation error in the Web site.    C:\Inetpub\newwwwroot\ad\Default.aspx    48    22    http://ad/
on lines:
<%@ Register TagPrefix="uc1" TagName="FeaturedAd" Src="Controls/FeaturedAd.ascx" %>
<%@ Register TagPrefix="uc1" TagName="CategoryBrowse" Src="Controls/CategoryBrowse.ascx" %>
What can i do to correct these? i found a post talking about this ProfileCommon problem:
http://forums.asp.net/1141608/ShowPost.aspx
but i dont really know what they are talking about, because i am not trying to do any of those things, so can anyone please tell me how i can fix this problem?

Thanks in advance!
-yue