Lipsync won't "stick" to M4

estenzel_409ccd9b25

Hey people!

Something has stopped working!
I lip-synced some dialog to the Michael 4 character using the built in tool in DAZ 4.5 (32-bit).
Everything looks good: mouth moves synced to the .wav file, head nods, eyes blink...
I save the file to come back and work on it later.
I come back later, open the file and...
No mouth movements!
His head still bobs, but his mouth is clamped shut and his voice must be coming out of his ears!

I opened some of my old projects with M4 and V4 - same thing no one's mouths are moving anymore!
My Genesis projects still work (knock wood).

Does anyone have any ideas what has gone amiss?
Thanks for any clues!

Erich