This feature is a bit difficult to understand and find help for. I agree it would be far better if the error window had a help link to the help file, but all that said, the resolution is within the help files. I've tried other slicing prog's ( double the price and bloated)and I don't find them any easier and i've often ended up with pages giving error message (not on my computer but on visitors) which I've no idea how to correct.
One thing I do find annoying personally and which must be very baffling to a first time user is XX's insistance of putting the "mouse off" (first instance of a button) below the layer it was created in (ie it disappears!)
Egg