Compatibility issue between VS2010, Pex, and SlimDX

I have downloaded June bits of Pex and June bits of SlimDX SDK. Installed them on my RTM VS2010 Premium. Pex explorations do not wor开发者_如何转开发k. Reverting to Feb 2010 bits of SlimDX seem to cure the problem.

I've asked the same question on Microsoft Forums and SlimDX forums, and neither party wants to own this. How can I even begin to troubleshoot this?

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Peli has answered this question on the Pex forum. It worked for me. See the link above.