demag_gui: fixed fit not foud ereror in read of pmag_specimeans
demag_gui: fixed fit not foud ereror in read of pmag_specimeans

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