demag_gui.py: tried new style for fitbox to fix mac compatability
demag_gui.py: tried new style for fitbox to fix mac compatability

lfairchild/PmagPy,lfairchild/PmagPy,lfairchild/PmagPy,Caoimhinmg/PmagPy,Caoimhinmg/PmagPy,Caoimhinmg/PmagPy