After apply the 1/31/06 updates from Nero to v. 6.6x, previously playable Nero Digital files produce the following:

o On Win 98SE PC: "error reading files" and no further response.
o On Win XP PC: "MPEG-4 Demo Expired", but the files will play anyway.

Anyone have any ideas why? I use the W98SE machine for most ND playback and now I'm out of luck, it seems.