I was able to answer my own question!
When building a file with csc that includes other pre-built assemblies as
resources, make sure that your AssemblyInfo.cs file comes as the last
argument in the command line. If its the first it will not work.
> Does anyone know how to set the file version on a physical file on disk? Or
> better yet, using csc, how to set the file version if you're creating a file
> with pre-built assemblies as resources.