'vtkSlicerMarkupsModuleMRML.vtkMRMLMarkupsROINode' has no len()

[lassoan (Andras Lasso)]

@chir.set

As to why Python breaks with special characters in scripts while Slicer libs are compiled with UTF-8 support, I can’t tell.

It was a problem specific to how macOS loads files by default. I’ve fixed the issue now (see Couldn't Reload, what's wrong - #4 by lassoan).