IIRC ipf images cannot be shared.
Often people who are using pirated WHDLoad keys get similar errors to yours.
Oh jeez... You also get that error if you have a checksum error on the disk, a disk that had copy protection that got damaged, a physically damaged disk, a disk previously infected with a virus, or any number of other reasons. I've had that message get spit out from several sets of originals I've bought 2nd hand in box lots years ago.
Basically, all that error means is that there was some trackdata there other than what the WHDLoad installer was expecting. It MAY be a different version, it MAY be a pirated version, but more likely, given the age, it's just a DAMAGED DISK.
Besides, he stated right there he could provide proof he has the original. Unfortunately, if I read it correctly, he needs Dawn Patrol, which I don't have. :lol: (I do have Reach for the Skies and Overlord, though, for what it's worth.)