Method Not Found: "Void MicroFour.StratFrame.Data.ConnectionManager.set_ConnectionFolderDataFolder(system,string)"

I am setting the ConnectionDataFolder location in the Program.cs file to my executable's directory just before calling the SetConnections method.  Of course everything works fine on the development machine.  Am I missing a reference or step in using the ConnectionDataFolder property?

Any help would be great!  Thanks!

Doug