Application that compiled in .net 3.5 client profile doesn´t run on .net 4 (full)

I write wpf application that compiled on .net 3.5 client profile. I Install .net 4 (full version not the client profile) run my application, and got an error 开发者_StackOverflow社区that says that I must install .net 3.5 client profile.

any Idea

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Then I suggest you install the .NET 3.5 Client Profile.