Object File-Midland Suburban Line and Tyne Valley.

"Midland Suburban Line" requires the following to be inserted into the object file: "BRSema4sigs", "BRSigs", "BRSigs_Open".  If this is not done, signals will not appear in the simulation.  However, if the same procedure is followed in the "Tyne Valley" sim., no signals will appear so no insertion of "BRSema4sigs", "BRSigs", "BRSigs_Open" is required and the signals will appear as they should.  Just why this should happen is beyond my limited skills to explain.  However, I would be interested if anybody can illuminate me!