I’ve had 3 separate occasions where 3.5R3 deleted my any saved ztools in a session of Zbrush after it either closed or crashed.
I need to know how to fix this problem or report it, because it’s one of the worst bugs I’ve ever encountered. I just lost 13 iterations of a model I was working on, no where to be found. Zbrush crashed and deleted all of them without my knowledge. This has happened to co-workers as well.
James
WOW!..Seriously? thanks god it never happened to me…well, I mean not the crashing part, but the one that deleting my work 
But where did you save your work?..I mean is it on the ZBrush root folder? My Documents? or any other place? for me I always just save my WIP folder in my desktop (and thats it on my desktop, nothing else lol) for easier access and faster saving (I don’t know whether its true or not, but my friend once said that its better to save everything in desktop rather than any other place/ even worse external HDD, because it takes time to complete the saving progress)…
_Revel