"This is the Amtrak F40PH Package
Rail Simulator folder into your home directory Rail Simulator copy.
Original by David Brindley.Repaint's by Michael Zimmer.
3xAmtk-F40PH Phase 2
3xAmtk-F40PH Phase 3
3xAmtk-F40PH Phase 4
3xAmtk-F40PH Phase 5
2xAmtk-Downeaster F40PH Phase 4
2xAmtk-Downeaster F40PH Phase 5"
If anyone here has installed this particular pack, please enlighten me on how you did so.
Sorry if I posted this in the wrong place.

However, I'm having the same problem as SCLALINE (i.e blocky shadows). 