Anyone had this problem? I open visual studio .net create a new app on my webserver, add a new form to it, the browse it and it errors on me with this error. I don't change anything, VS.Net just creates the default form, but it doesn't work. Anyone have any ideas?<BR><BR>Server Error in '/tmp_express' Application.<BR>--------------------------------------------------------------------------------<BR><BR>Parser Error <BR>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. <BR><BR>Parser Error Message: Could not load type 'tmp_express.signup.WebForm2'.<BR><BR>Source Error: <BR><BR><BR>Line 1: <%@ Page language="c#" Codebehind="WebForm2.aspx.cs" AutoEventWireup="false" Inherits="tmp_express.signup.WebForm2" %><BR>Line 2: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" > <BR>Line 3: <BR> <BR><BR>Source File: e:inetpubwwwroot mp_expresssignupWebForm2.aspx Line: 1 <BR><BR><BR>--------------------------------------------------------------------------------<BR>Version Information: Microsoft .NET Framework Version:1.0.3705.209; ASP.NET Version:1.0.3705.0Build your solution- Build>Build Solution from the menu.Thanks, that worked. I didn't know that you have to build it before it will run. How come if I do a web app in VB I don't have to build it before it will run? Also, I notice something a little strange about VS.Net. When I create a web form or something like that it auto matically creates the webform.aspx.cs file. How come it creates it with the name of .aspx.cs instead of just .cs? Can I change this behavior? In the quickstart lessons none of the codebehind web forms are .aspx.cs they are just .cs Any advice? Thanks.