The first attempt. Upgrading Race 07 to Remaster.
I made a backup of the original Race 07 in steamapps\common, I deleted files from Userdata for the original Race 07 install and started the .cmd on the original Race 07 in steamapps\common
Very quickly, the script copied the new files to folders.
Config created a new folder, so it is ok.
Starting the game (the new Red icon): Steam API failed.
I haven't seen this for years, because I use a patched steam.dll that does need internet connection at all. I may share this file.
Logging it to Steam, starting the game Red icon again. The config window started again.
I have the same problem in ATCC3, because the .exe filename is different than Race_Steam.exe, but when I click the game icon, the game starts.
Clicking the RaceR .exe starts Config file endlessly. I cannot start the game.
Both the new Red icon and the original Race_Steam.exe start the Config only.
Now Copying the whole Race Remaster to a different folder, D:\Games\
It didn't start. Again config only... but
I copied the RaceR_Steam.exe , only this file, to the original Race 07, without modifications and it started
I copied RaceR_Steam.exe to one of older versions of ATCC3 and it started the game too
Now I really don't know what could be wrong, that the patched game doesn't start. I will try to restart my PC.