I am encountering exactly the problem you did (.bak PAF files from 1995; message when I try restore about non-existent disk 2).
I am sceptical that the first responder is correct. I actually have two copies of the backup disk. Both are perfectly legible with a text editor.
I read elsewhere that for version of PAF prior to I think 3, one needs the older versions to read the .bak files. I know that my original work was done with DOS. (I have a copy of a letter to the PAF folks asking when the Windows version was going to become available. (That version when it arrived may have been PAF 3.
What I would like to ask is: * is there a way to identify the paf software version which was used to generate a .bak file? * where can I get a copy of the earlier (prior to 3) PAF executable?
There is one difference in my experience from yours; my backup disk only has files with names like INDIV2.BAK, NAME2.BAK. There are no corresponding NAME2, INDIV2 files on the disk.