Its a picture of an Air Force Cross medal. I'll have a look at the FAQ. No, they are not zipped. Or in a zip. I stopped using that stuff in the days of DOS.
I tried again and this time it all worked! The installation took 20 mins in total.
I think I know why it didn't work before. BTW all three sets of files I had - backup on external hard drive, USB and CD had the correct names and exact sizes.
But one set was on a USB external hard drive, another on a USB flash drive and the others on a DVD.
I copied the set on the external hard drive to my C: drive and those worked..... Possibly the non-native drives aren't fast enough?
Looking back over the years I think I had this same problem before