I was trying to use svcutil.exe to generate proxy classes for a service but when I use the /reference option to reference an assembly that is built for .NET 4.0 I g
/reference
According to this link for .Net 4.0 you should use one in C:\Program Files\Microsoft SDKs\Windows\v6.0\Bin.
http://msdn.microsoft.com/en-us/library/aa347733.aspx
Seems a little strange though, if the one in the v7.0A dir is too old.