Help needed! I am trying to download JR freeware content for Trainz 12, but the CDP files will not open on my laptop. Not sure if this is the right place I should be asking but I figured there might be some knowledge here. The files download onto my laptop without issue, but when open the file, nothing happens. I do not know if this is a problem with either my laptop or the Trainz game system. Any help would be greatly appreciated!