It uses the exact same script ! Ive tested all 3 versions from the first post ( NEW Uploads today ) those Install perfectly fine..
I finally see why... your using
ultraarc when ive been using diskspan
The error is from Ultraarc NOT from Diskspan.
Recompress your installed game using diskspan option #3. resulted in 4xdvd5
1-3 4.37GB
4 3.78GB
Mausschieber must have tested using ultraarc as well...