Well, there's the problem. The FDC profiles are for 8 flap settings, Overland MD-11 are 7. As soon as I added another Flap Setting into the Overland aircraft, the FDC connected without any problems.
Not an ideal fix, but I'd rather not fool around the FDC settings, because when I did that before I lost all my previous settings withing FDC.
This will work.
JH