I'll post this here since the Illinois Central GP9 set I purchased from Ed's Trains years ago was created for MSTS, even though I intend to run it in ORTS.
Installer fails with "is not allowed to run on WinNTx" message - so it must be a 16-bit installer, not going to run on a 64-bit OS.
Windows compatibility mode hasn't worked when I tried WinXP Service Pack 3 nor Windows 98 modes.
No joy trying to ask about it on the Ed's Trains web site: the captcha-style security is broken - no field displayed to enter the character string, after trying with both Chrome and Opera browsers.
I managed to find the unzipped set from an MSTS installation backup I had salted away, but I wonder if Ed's Trains installers have been updated now ... or same as when they were released? Anyone purchase\install any Ed's Trains models recently, with success on a 64-bit OS?
I grew up watching black IC GP7s and GP9s running the High-Dry Line across south-central Indiana in the late 50s, early 60s. Glad I had a backup of the set I bought back when we were running 32-bit OS.