Using .Net 2.0 with Gallio

I'm running tests with TD.Net and Gallio. I've got .Net 4.0 installed, but I want to use开发者_如何学编程 the 2.0 runtime. I've put <supportedRuntime version="v2.0.50727"/> in my test assembly's app.config, but it still uses the 4.0.

What should I do?

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You could try changing the target framework to .Net 2.0 in your test assembly's properties?