Measure error when loading into the OS GUI with Measure Internalization

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I'm getting the following error in my measure.xml file when I open the measure in the OS GUI.

<error>wrong number of arguments (1 for 2)</error>

My all my tests in my test.rb pass without an issue. I started getting this error after I added Measure Internalization to check unit preference as described in the measure writing guide. When I remove this code from my measure, it opens in the GUI just fine. Is this feature not supported in the GUI?

# I'm passing the runner into my arguments definition so i can check units preference
def arguments(model,runner)