rFactor 2 was added to the games list last year and it was addable for awhile, but many months ago rFactor 2 went 64-bit, and in doing so, the location of the executables changed.
Because of this, you can no longer add rF2 to your library.
Adding the Launcher works, but the second step, adding the game binary, is where it fails.
The old location was Core\rFactor2.exe.
The new locations are Bin32\rFactor2.exe and Bin64\rFactor2.exe.
Hoping you can get this fixed soon.
I'll alert our detection team and see what happens. Thanks for keeping the reminder up.
No problem. We made an update not too long ago to it. Glad it's working :-)