ok, i can't help it, i begin feeling stupid...:blushing: hi, nruddock, i've tried the ScaleAll1.py.doc you kindly offered, aaaaand: Traceback (most recent call last): File "", line 10, in ? AttributeError: 'module' object has no attribute 'DialogSimple' :blink: edit and here comes the funny thing: running ScaleAlla brings up exactly the same message!!!