I tried to install w3 gotye edition and was told immediately that a file was corrupted and to use a file integrity tool to see which one. Suspiciously, the first bin file had a different size (4,193,358K) than all the other intermediate bin files (4,194,304K). This version is setup_the_witcher_3_wild_hunt_goty_1.31_(a)_(9709)-1.bin. I've downloaded it twice and it was the same size each time and didn't fix the problem.

Can someone confirm this is the right size for the file? Alternatively, can someone tell me how to check the integrity of the files so I don't have to re-download 40G again (and maybe not solve the problem anyway) please?

K