Hey Ziad,
Any luck with this?
It seems to be something to do with the new AFNI - perhaps feature whereby the session is rescanned when you press the overlay button (which I was so happy about earlier!). I tried the same data on a machine that hasn't been updated with the newest AFNI version yet and it works fine..
I have tried setting AFNI_RESCAN_AT_SWITCH to NO, but it hasn't helped..
One obvious easy solution is just to keep the overlay selector window open..but I have a terrible habit of hitting "Set"! Poor inhibitory control...
Thanks!
Clare