Is this Opus related? Opus doesn't burn CDs, except either through the Windows XP CD-burning stuff (in which case Windows is burning the CD and Opus just adds files to the set that get burned) or via the Nero toolbar (in which case Nero is burning the CD and Opus just supplies a list of filenames).
Have you tried with other CD writing software etc.? This sort of thing can be due to the CD writer or the media being used. Writing the CD at a slower speed sometimes works around the problem.
Opus still isn't involved in burning the CDs beyond sending filenames to whatever program is doing the burning.
If the wrong files got put on the CD then there might be something going wrong in Opus but since the files are fine but the CD itself is only readable on the local hardware then it's going to be down to the burning software or the physical CD writer/media and not Opus.
You could try doing the same thing using just Explorer to confirm this.
Ok, I had already cleaned out everything from the Registry with "roxio" or "easy media creator" , so it should be clean, but apparently not.
I looked at an older disk i copied (pre Roxio) and its file system is CDFS. what is the difference between this and CDUDF?
I knew i hated that company's software for a reason. I realize we may be getting off Opus topic here, my apologies. i did use only Windows Explorer window and Send To, and will try CD on other systems. Something else i noticed, the file went directly to the CD , not to a temp dir where i must "Write these files to CD", like it used to.
Roxio left 3 drivers that got loaded at boot time, one a CDUDF driver. I found these using a prog called Security Task Manager.
I quarantined these drivers, then uninstalled the CD drive entirely from XP thru device manager and rebooted. At startup, XP gave me this message:
"upper and lower CD filter registry entries were incorrect, this was fixed, reboot in order to access CD...." and told me to reboot once more.
So, i rebooted again, and TA DA. CDFS again.
Maybe this will help someone else who had the misfortune to use Roxio EMC and has similiar issues.