Probably, the program not work with floppy disk drives which has not full set of signal pins. For example, Mitsumi model D359M3D.
Author of the program (Vasil) is informed already.
New version of the utility will be finished soon. We received a news from Vasil.
But we haven't any bugreports about version 1.0. Anybody has a problems with formating of DOS diskettes? How often do you saw program message "Resetting drive..." and next closing the program?