mscorlib.resources couldn't be found! Large parts of the BCL won't work!

Brian Grunkemeyer from BCL team answers one question about mscorlib.resources here:

https://msdn.microsoft.com/newsgroups/default.aspx?dg=microsoft.public.dotnet.framework.clr&mid=586edffa-c09d-470d-ba23-a99832acabfa