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A strong name signature is not valid for this assembly. Microsoft.LightSwitch.Model.Xaml.dll

I deployed the desktopwizard desktop application, and my users get this error when installing the application:

Strong name signature not valid for this assembly Microsoft.LightSwitch.Model.Xaml.dll

This error causes the installation to fail. Does anyone know the cause of this error or where to start looking?

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What happened in my case is that VS 2013 upgraded my LightSwitch application to the .NET Framework. The application works fine on machines with .net 4.5, but on machines with 4.0 I get the same error during the installation process. You can either downgrade the application to .net 4.0, or ask users to install .net 4.5.

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