heheh.. that consist tilt is a common error with rw3..
ok, cant help with the scenario not loading issue, but maybe i can help with the consist tilt problem..
Step one is to learn and recite the RW3 mantra which goes: "These physics are wacked and wonky" . Do this at least three times before loading your scenario..
The next thing to do is take a look at your train and count cars. If its a passenger train, dont go over ten cars in a consist, and make sure that theres no cars sitting on a curve in the railyard before you select it. That curve will generate an instant car tilt error, as soon as you make your selection.
If your train is a freighter, then things get a bit stickier.. First go here (
http://dickyjim.com/index.html ) and download the coupler fix that britkits has very kindly made, and follow the directions on installing it.. Next?? Well, there is no next. Not for freighters at least. The curves need to be as great if a radius as you can get them to be, and avoid anything over a 3% grade. Put engines at the front and back, as well as throughout the main consist, dont have a formula unfortunately that will help here, as i'm still experimenting myself..
Another thing is even with wide radius curves, watch your speed. That car may weigh a hundred tons, but you can watch them tilt even at five mph, and they will tip if you blow on them just right..
Wish i could help more, but really i'm at the limits of my knowledge on it..
Good luck..
Pam