Has anyone else encountered loading a saved game only to find the lights, (Cab lights and Headlights) are not working even though they were switched on prior to the save? Also, trying to switch them on again doesn't fix the problem.
I had this issue once, during a scenario. Restarting the HEP-engine on the locomotive fixed it for me. After doing that, all the lights worked again.
The save function is broken and has been for a very long time. The only good thing with it is it will sometimes, and only sometimes, help out if there is some obvious bug and you are stuck and positive that you can not progress further. Doing a save in these situations will often get you on the move again.