Cubase not loading VEPro preserved instance

After coming back from a break, I woke my iMac up to resume working on a new piece. I had to reload the VEPro instance, but the when the instance opened it was blank. I can’t recover anything from that preserved instance.

I opened another piece and the preserved instance opened just fine.

Can anyone explain what happened and how I can recover the instance so i don’t have to completely reconstruct it again?

Thanks! -Jim