Joe...

My PEACOCK is working under Windows 10.

When you were seeking workarounds to make PEACOCK work under Windows 10, did you try inserting a folder\file combination of \system32\bdeadmin.cpl under the PEACOCK directory? (bdeadmin.cpl has to do with the Borland database.)

To spell things out a bit: I have the CD-ROM copied to the hard drive in a folder directly under C: (C:\PEACOCK). Inside that folder I needed to add the folder and file described above in order to make it work. When PEACOCK.exe runs, apparently it will seek bdeadmin.cpl in both C:\Windows\system32 AND IN C:\PEACOCK\system32. I don't recall for sure but I believe I needed to download Borland's bdeadmin.cpl from the Internet... I think that it had gone missing (or maybe I was able to nab it from an old backup... I don't recall).

I don't know which would take precedence if I had a version of bdeadmin.cpl in both places; I don't have it in C:\Windows\system32. It might work to put it there but I chose to put it in C:\PEACOCK so that future Windows updates or upgrades would not touch it and to remind myself that it is essential to running PEACOCK.

I also don't recall whether you need to be concerned about getting any particular version of bdeadmin.cpl. Mine seems to be from 2001. On the other hand it is possible that bdeadmin.cpl has not changed or is backwards compatible.

By the way, I think this problem and resolution occurred when I moved to Windows 8 ro 8.1 and that when I subsequently moved to Windows 10 there was no problem.