@AmiDelf
I think you got it in one!
I've just stripped out the cards and the Flicker Fixer
connections for the PIV were decidedly suspect.
Anyway I cleaned them up and made sure they went
fully home and 'Bingo!' - all's back as it should be.
I'm most grateful for your help.
Please go to the Top of the Class!
Cheers,
JaXanim
Author of 'WaveGuide - A Plain English Guide to LightWave 3D'
http://waveguide.v-2-1.net