It worked! Thanks so much. When you said “Class method”/“Instance method”, the light flickered on.
Now to make it do what I want it to do. But that’s another story…
···
Hi Ted,
say
def S2hhmmss.to_hhmmss(duration)instead of
def to_hhmmss(duration)and it should run.
This defines a class method as opposed to an instance method.
Juergen