there is a bug in head shot
it goes like this your working on a head shot based model CC crashes
after you open the restore file the headshot image is missing but your character is in the viewport
if you then click headshot image matcing tool activation check box the character in the viewport seems to vanish.. unclick image matching tool check box its still gone
just a grey screen..though it seemed when i used viewport navigation tools the char reappeared. This has happened several times.
Seems like a bug. thanks