Version 188.8.131.52 had been working perfectly on my system.
I upgraded to Version 184.108.40.206 and produced 3 unreadable data CDs size
approx. 650MB. I created an ISO image first in DAO mode, then burned from that. The systems I tried the CDs in variously reported them as unreadable or audio CDs.
I reverted to version 220.127.116.11, remade the ISO image and I'm producing
readable data CDs again...
Medion PC MT5 MED MT38 (VIA 694X/686A PIII 1GHz) 512MB 20GB Seagate
Nero version 18.104.22.168 was supplied bundled with the system
Windows ME, ASPI 4.72, DirectX 9.0, IE6 SP1, WMP 9
Philips PCRW 1208 (CDD4851 12x) Firmware version 4.0 (updated from 3.0)
Media used: Memorex 1-16x 700MB serial numbers LH3164FE2635590F,