Cannot deploy asp.net openid library on shared hosting service

I have deployed successfully the dotnetopenid dll under IIS7 but on my shared hosting service it says:

Compilation Error Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.

Compiler Error Message: CS0246: The type or namespace name 'DotNetOpenId' could not be found (are you missing a using directive or an assembly referenc开发者_运维百科e?)

Why ?

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In Visual Studio, expand the project's references and check the properties of the DotNetOpenId reference. Specifically, make sure you have set it to "Copy Local", which will place a copy in the bin directory for you to upload to your shared hosting.