It's because of using MEF. NGEN is only able to follow assembly references. But if you use MEF then you probably don't refer all the assemblies because MEF is responsible to load them dynamically at runtime.
I don't know what the actual issue was but the solution was to write a batch file that simply NGEN'd every binary in the directory. I guess there were binaries that were not being NGEN'd when running just the ngen install command on the top-level exe.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.