Feline - hi there!
[Edited: Ooops - someone has already done it or course! Goto
http://sac-ftp.externet.hu/utildisk1.html and download add107.zip - extract readme.txt and add107.exe. Windows app - I've tested it and it works. Insert master, say how many copies you need and go. Havent explored it fully so I don't know how well it copes with abnormal situations admittedly. Still have to swap by hand tho']
Perhaps I'm being dense as to what you are doing, but why not use a nice batch file to do all this in one? Still a awful chore swapping disks but there you are.
Pseudo batchcode: ------------------
a:
attrib a: *.* -h -s -r -a (if you are likely to have any protected files on the diskette, omit if not)
errortrap here
del a

*.* (no need to format unless disk is likely to be damaged)
errortrap here
{otherwise you could do a quick format in the form FORMAT A: /Q [V:label] /F:1.44) and errortrap
xcopy C

mydir\*.* a:
errortrap here
beep beep if finished with no errors
goto end
:error1
beepwarn
errormessage
[action]
goto end
error2
beepwarn
errormessage
[action]
goto end
etc.
:end
echo Finished with not errors!
echo Please put in another disk (Press Ctrl-C to stop)
end pseudocode ------------------
If you can give me a better idea of what what exactly you are doing I could write you a nice batchfile with errortrapping, compile it with BUILDER into a DOS executable for speed, test it and email it to you.
Easy to make a friendly and colourful interface too.
(BTW, at those volumes I'd hunt around for a 2nd hand disk-duplicator (like the standalone shown at
http://www.cyber-pr0.com/copybus63.asp or the add-on at
http://www.ioproducts.com/flopdisdup.html ) that would automate the whole thing - just throw 50-100 disks into the hopper and go and have a beer!)
Cheers
Mac