I am running TS2020 on Windows 10 and it works fine with the supplied routes etc in both 32 and 64 bit modes. I purchased, downloaded and installed the Chiltern Mainline add-on which appeared to have installed cleanly. However, when I double click on the desktop icon to start it a window appears asking if I want 2D or 3D track mode and after selection absolutely nothing happens. Also, when I go into Free Roam in TS2020 the Class165 and Marylebone are there. Selecting a run brings up an error window stating that the consist builder cannot find the various Class 165 carriages. Looking through the installed files I was surprised to see that a number of London underground stations are listed in file names, so I have to question whether:- 1) Version 107 of Chiltern Mainline is incorrect in some way. or 2) The installation process has not installed to the correct files (I specified G:\Steam for the installation process) or 3) does anyone have any solution as to how I can get Chiltern Mainline to work properly?