Precondition: please make sure that you have installed Pex
before installing PexMutator
1. Download PexMutator 1.1 sources
2. Open solution PexMutator.sln
3. Check whether the references to Microsoft CCI are correct. If the references are broken, delete the existing references and add new references.
The CCI dlls can be find in "dlls" directory in PexMutator1.0 sources, more info about Microsoft CCI is available in http://cciast.codeplex.com
4. Build Mutator, then use the generated Mutator.exe to instrument PE files under test.
More details of PexMutator are available here