登录主页出现以下错误 悬赏：5

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.Web.HttpException: Response is not available in this context.

如何解决，安装完成进入主页面就出现了。

操作系统Windows 7  

数据库MySql5.0

Web服务器IIS7.5      

.NET Framework；.NET Framework 4.0