set LED issues with Calico 2.4.2 in Python

I'm working with Calico 2.4.2 using Python with a Scribbler 2 / Fluke 1 combo. I started up a program which worked without issue in a previous version (though it was at least six months ago). In Calico 2.4.2, I'm encountering errors using the LEDs. The code snippets below were taken directly from the Calico Myro reference page (http://calicoproject.org/Calico_Myro)

set("led", "front", 0)

throws

Traceback (most recent call last):
  File "<string>", line 1, in <module>
TypeError: __init__() takes at most 1 argument (3 given)

setLEDFront(0)

works as expected.

setLEDBack(0.5)

throws

Traceback (most recent call last):
  File "<string>", line 1, in <module>
TypeError: Cannot cast from source type to destination type.

set("led", "back", 0)

throws

Traceback (most recent call last):
  File "<string>", line 1, in <module>
TypeError: __init__() takes at most 1 argument (3 given)

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