I also seem to have this issue.
My trainer cannot find the game.
so i reinstalled this 16 GB game and downloaded the DC trainer and tested it
the trainer found the game instantly and it works 100%.
20 minute download wasted.. 15 minutes checking trainer, wasted..
the trainer looks for
WL2.exe
to be running and the trainer is for 64 bit .exe running.
best,
Cal