ZBrushCentral

Saved .zpr file is empty! All subtools are gone!

Need immediate help!

I was working on a sculpture for a customer. When I opened the .zpr file this morning I noticed that it was empty! No sign of my project or it’s subtools! I’ve been working with Zbrush for 3 years and this has never happened to me before :cry:

OS?
ZBrush version?
Quicksave?