The Software is generic and should work on any machine, although most people kept a backup disk for each machine to save having to re enter options like location, number of copies etc etc. Also ensure that the file is unzipped correctly to a formatted floppy.
If OK I would check the floppy drive as the only time these got any exercise is when the battery fails totally (after a good number of years). I have had several where the mechanism has "stuck" through lack of use. Unship the drive and take off the tin cover at the top and bottom. Start the pagewriter with the disk inserted and you should see the head assembly move to the centre seeking the file allocation table. If it doesn't move just give the worm drive assembly half a turn with your fingers (which is usually enough to free it up) and you should see the head moving as data is read out. Once the data is reloaded you just have to reenter the config data (the most important is paper size) then I would resave to another blank floppy.
Let me know how you get on
Regards
Ed
Southwest Medical Ltd