@gferreira

SimpleFontWindow.py script was working for me really well for awhile, but has recently stopped working.

When I try to run it now, I get the following:

Traceback (most recent call last):
  File "open-fonts-in-SimpleFontWindow.py", line 96, in <module>
  File "open-fonts-in-SimpleFontWindow.py", line 47, in __init__
AttributeError: 'NoneType' object has no attribute 'addWindowController_'

If I place help(self._font) just above line 47, I get the doc string for lib.fontObjects.fontPartsWrappers. The first method in there is UIdocument(self). However, if I instead do help(self._font.UIdocument()), I instead get the following:

Help on NoneType object:

class NoneType(object)
 |  Methods defined here:
 |  
 |  __bool__(self, /)
 |      self != 0
 |  
 |  __repr__(self, /)
 |      Return repr(self).
 |  
 |  ----------------------------------------------------------------------
 |  Static methods defined here:
 |  
 |  __new__(*args, **kwargs) from builtins.type
 |      Create and return a new object.  See help(type) for accurate signature.

Traceback (most recent call last):
  File "open-fonts-in-SimpleFontWindow.py", line 99, in <module>
  File "open-fonts-in-SimpleFontWindow.py", line 49, in __init__
AttributeError: 'NoneType' object has no attribute 'addWindowController_'

Here's my specific code, if it's helpful: https://github.com/thundernixon/robofont--big-fonts/blob/f936ca7d4eb49113ffa5f014f253e5f6d4db7189/open-fonts-in-SimpleFontWindow.py

I'm running:

• RoboFont Version 3.3b (build 1910091627)
• macOS Mojave, 10.14.5 (18F203)