Server Error in '/' Application.
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Item has already been added. Key in dictionary: 'RegistryPermission'  Key being added: 'RegistryPermission'
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.ArgumentException: Item has already been added. Key in dictionary: 'RegistryPermission'  Key being added: 'RegistryPermission'


Source Error:


An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.  


Stack Trace:




[ArgumentException: Item has already been added. Key in dictionary: 'RegistryPermission'  Key being added: 'RegistryPermission']
   System.Web.HttpRuntime.HostingInit(HostingEnvironmentFlags hostingFlags, PolicyLevel policyLevel, Exception appDomainCreationException) +378


[HttpException (0x80004005): Item has already been added. Key in dictionary: 'RegistryPermission'  Key being added: 'RegistryPermission']
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +9090828
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +97
   System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr) +258








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Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.272

系统是SERVER2003 +sql2000，已经设置好了的数据库，密码，用户名。

环境问题吧，建议用win 2008