Windows 7 IIS7, Could not load the assembly 'App_

Server Error in '/' Application.

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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: Could not load the assembly 'App_Web_vaxwqgil'. Make sure that it is compiled before accessing the page.

Source Error:

Line 1:  <%@ page language="C#" autoeventwireup="true" inherits="cart, App_Web_vaxwqgil" %>Line 2:  Line 3:  

Source File: /paypal/cart.aspx    Line: 1

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Version Information: Microsoft .NET Framework Version:2.0.50727.4927; ASP.NET Version:2.0.50727.4927

 

Windows7 IIS7上跑会出现这个问题。后来发现是新建的虚拟目录必需转换成应用程序，这与在IIS6中不同：

IIS7:

 

IIS6: