Well, I think I've found the problem. It's NOT the engines, it's the TIU! I decided to test my theory by deleting an known functional engine already installed in the system. When I tried to load it back into the system, guess what, "No Engine Is Found". So I tried my Rev. G Back-up TIU and the same thing happened, "No Engine Is Found". This was done on a separate Programming Track. Here's the common denominator, both TIU's were successfully upgraded to the 5.0 software last year and I never tried loading an engine because I was dismantling my old layout. Is there a possible problem that I am not aware of? I tried the Reset (horn and bells) using a Z4K with no luck I really need help on this one. Thank you in advance!
Chief Bob (Retired)