SGEN failure: An attempt was made to load an assembly with an incorrect format in VS2008

Question

I was able to find several similar questions asked and answered, but none of the answers or exact conditions applied to my situation.

1. I have a .NET 3.5 project bei

Answer 1

While turning serialization assembly off, will solve the problem, it is just workaround - in the end you'll pay for it with slower start up time. The problem is you have to call sgen.exe from x64 SDK (if you're targeting x64). If you're using msbuild, set correct path to sgen like this: