If you plan to try SilverUnit (CThru.Silverlight) that comes bundles with the latest Typemock Isolator,
you may come across a problem where CThru is compiled against Isolator 6.0.2, while the current isolator is 6.0.3
in that case, download and install this patch that fixes this problem:
https://www.typemock.com/patches/TypemockIsolatorSetup6.0.3.619.msi