http://www.daz3d.com/forums/viewthread/50275/

Wait till you try a pose on G2F/M. You will get an error message with any/all new poses from DAZ, and your figure will 0. 

It seems the cure all for this is to resave in Studio. I've compared poses and clothing files before and after resaves but have yet to see any difference in them other then one works and one doesn't. The only difference I see is the added .DUF to the thumb; and no changing the thumb name wont do.