I have that SRS SP SD70M. I cannot reskin, though. My last attempt that was successful was back in TS12 days. Too much has changed. I have to bury my head into a Blender learning session for the way I was briefly explained recently. Ho-hum. Thanks for sharing.
What are the specs of the semi-decent laptop? Provide processor, GPU, hard drive type, RAM amount and type. That may help figure out what may be something to look at.
what made you go looking for :5 versus the only :1 and :2 on the JR site? Did you purchase something recently and it is missing?
@norfolksouthern37 may have info, since it has his name?
It is worth downloading if you want to play with non-American content. I just don't have the immediate patience to figure out how to do the basics like startup, as I did seem to release the brakes, flip the reverser and notch up the throttle. Just doesn't move with engine not running.