New Post: Enable-Migrations encounter "System.BadImageFormatException: Could not load file or assembly 'EnvDTE, ...'The module was expected to contain an assembly manifest.

I used VS2010 under Win7(x64 ), installed Nuget and install the EF Package. And can read and write DB successful. But I want to Enable Migration used the Nuget Package Manager Console, then I will encounter the error as below:
PM> enable-migrations
System.BadImageFormatException: Could not load file or assembly 'EnvDTE, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The module was expected to contain an assembly manifest.
File name: 'EnvDTE, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' ---> System.BadImageFormatException: The module was expected to contain an assembly manifest. (Exception from HRESULT: 0x80131018)
at System.Data.Entity.Migrations.EnableMigrationsCommand.<>c__DisplayClass2.<.ctor>b__0()
at System.Data.Entity.Migrations.MigrationsDomainCommand.Execute(Action command)


Could not load file or assembly 'EnvDTE, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The module was expected to contain an assembly manifest.

I try to copy the "Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\PublicAssemblies\EnvDTE.dll" to the project bin folder, but it dosen't work

If anyone help me?