Editing, Viewing, and Layering Issues

[svz]

I'm curious if anyone else has had randomly had problems with editing their glyphs, their default view setting upon opening, and layer errors?

For about two weeks now, as I've been implementing Greek glyphs into a a previously drawn typeface, I've been getting an error when toggling between layers. It always allows me to keep working; however, throws an error callback:

Traceback (most recent call last):
  File "lib/tools/misc.pyc", line 305, in wrapper
  File "lib/views/doodleLayers/glyphLayer.pyc", line 741, in setLayoutForObject_
  File "lib/views/doodleLayers/glyphLayer.pyc", line 744, in setGlyph_
  File "lib/views/doodleLayers/glyphLayer.pyc", line 754, in updateGlyph
  File "lib/views/doodleLayers/glyphLayer.pyc", line 512, in setGlyph_
AttributeError: 'NoneType' object has no attribute 'getRepresentation'

Yesterday, however, something more extreme occurred and I can't work on any UFO files anymore! When I open a glyph the editing window is white (screenshot below), and I get this callback:

Traceback (most recent call last):
  File "lib/tools/misc.pyc", line 305, in wrapper
  File "lib/views/doodleLayerGlyphView.pyc", line 1881, in setGlyphRecords_
  File "lib/views/doodleLayers/drawingBoardLayer.pyc", line 35, in activateEditor_
  File "lib/views/doodleLayers/glyphLayer.pyc", line 148, in setGlyph_
  File "lib/views/doodleLayers/glyphMetricsLayer.pyc", line 30, in setGlyph_
UnboundLocalError: local variable 'scale' referenced before assignment

Editing window upon opening a glyph

Editing window upon pressing Command + 0 to zoom out, showing only the fill version of the drawing

Other associated callbacks that I received — while working on a layer named "follow", which resulted in me needing to restart RF and immediately after induced the main problem mentioned above — are below:

1

Traceback (most recent call last):
  File "lib/tools/misc.pyc", line 305, in wrapper
  File "lib/views/doodleLayers/glyphLayer.pyc", line 741, in setLayoutForObject_
  File "lib/views/doodleLayers/glyphLayer.pyc", line 744, in setGlyph_
  File "lib/views/doodleLayers/glyphLayer.pyc", line 754, in updateGlyph
  File "lib/views/doodleLayers/glyphLayer.pyc", line 512, in setGlyph_
AttributeError: 'NoneType' object has no attribute 'getRepresentation'

2

Traceback (most recent call last):
  File "lib/eventTools/editingTool.pyc", line 1218, in _keyDown
  File "lib/fontObjects/doodleSelection.pyc", line 1035, in selectionEditEnded
  File "lib/fontObjects/doodleLayer.pyc", line 403, in updateComponentReferences
  File "lib/fontObjects/doodleLayer.pyc", line 384, in _get_componentReferences
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/defcon/objects/base.py", line 350, in getRepresentation
  File "lib/fontObjects/factories/componentReferencesFactory.pyc", line 18, in ComponentReferencesFactory
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fontTools/ufoLib/glifLib.py", line 539, in getComponentReferences
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fontTools/ufoLib/glifLib.py", line 335, in getGLIF
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fs/wrapfs.py", line 342, in readbytes
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fs/base.py", line 603, in readbytes
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fs/osfs.py", line 630, in open
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fs/base.py", line 1553, in check
fs.errors.FilesystemClosed: attempt to use closed filesystem

3

Traceback (most recent call last):
  File "lib/doodleUndo.pyc", line 76, in undo_
  File "lib/fontObjects/doodleLayer.pyc", line 403, in updateComponentReferences
  File "lib/fontObjects/doodleLayer.pyc", line 384, in _get_componentReferences
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/defcon/objects/base.py", line 350, in getRepresentation
    representation = factory["factory"](self, **kwargs)
  File "lib/fontObjects/factories/componentReferencesFactory.pyc", line 18, in ComponentReferencesFactory
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fontTools/ufoLib/glifLib.py", line 539, in getComponentReferences
    text = self.getGLIF(glyphName)
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fontTools/ufoLib/glifLib.py", line 335, in getGLIF
    return self.fs.readbytes(fileName)
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fs/wrapfs.py", line 342, in readbytes
    _bytes = _fs.readbytes(_path)
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fs/base.py", line 603, in readbytes
    with closing(self.open(path, mode="rb")) as read_file:
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fs/osfs.py", line 630, in open
    self.check()
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fs/base.py", line 1553, in check
    raise errors.FilesystemClosed()
fs.errors.FilesystemClosed: attempt to use closed filesystem

4

Traceback (most recent call last):
  File "lib/views/doodleLayerGlyphView.pyc", line 1995, in undo_
  File "lib/doodleUndo.pyc", line 76, in undo_
  File "lib/fontObjects/doodleLayer.pyc", line 403, in updateComponentReferences
  File "lib/fontObjects/doodleLayer.pyc", line 384, in _get_componentReferences
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/defcon/objects/base.py", line 350, in getRepresentation
    representation = factory["factory"](self, **kwargs)
  File "lib/fontObjects/factories/componentReferencesFactory.pyc", line 18, in ComponentReferencesFactory
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fontTools/ufoLib/glifLib.py", line 539, in getComponentReferences
    text = self.getGLIF(glyphName)
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fontTools/ufoLib/glifLib.py", line 335, in getGLIF
    return self.fs.readbytes(fileName)
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fs/wrapfs.py", line 342, in readbytes
    _bytes = _fs.readbytes(_path)
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fs/base.py", line 603, in readbytes
    with closing(self.open(path, mode="rb")) as read_file:
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fs/osfs.py", line 630, in open
    self.check()
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fs/base.py", line 1553, in check
    raise errors.FilesystemClosed()
fs.errors.FilesystemClosed: attempt to use closed filesystem

5

Traceback (most recent call last):
  File "lib/doodleDelegate.pyc", line 96, in sendEvent_
  File "lib/views/doodleLayerGlyphView.pyc", line 1995, in undo_
  File "lib/doodleUndo.pyc", line 76, in undo_
  File "lib/fontObjects/doodleLayer.pyc", line 403, in updateComponentReferences
  File "lib/fontObjects/doodleLayer.pyc", line 384, in _get_componentReferences
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/defcon/objects/base.py", line 350, in getRepresentation
    representation = factory["factory"](self, **kwargs)
  File "lib/fontObjects/factories/componentReferencesFactory.pyc", line 18, in ComponentReferencesFactory
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fontTools/ufoLib/glifLib.py", line 539, in getComponentReferences
    text = self.getGLIF(glyphName)
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fontTools/ufoLib/glifLib.py", line 335, in getGLIF
    return self.fs.readbytes(fileName)
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fs/wrapfs.py", line 342, in readbytes
    _bytes = _fs.readbytes(_path)
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fs/base.py", line 603, in readbytes
    with closing(self.open(path, mode="rb")) as read_file:
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fs/osfs.py", line 630, in open
    self.check()
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fs/base.py", line 1553, in check
    raise errors.FilesystemClosed()
fs.errors.FilesystemClosed: attempt to use closed filesystem

6

Traceback (most recent call last):
  File "lib/eventTools/editingTool.pyc", line 1175, in _keyDown
  File "lib/fontObjects/doodleSelection.pyc", line 1700, in deleteSelectionFromGlyph
  File "lib/fontObjects/doodleLayer.pyc", line 403, in updateComponentReferences
  File "lib/fontObjects/doodleLayer.pyc", line 384, in _get_componentReferences
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/defcon/objects/base.py", line 350, in getRepresentation
  File "lib/fontObjects/factories/componentReferencesFactory.pyc", line 18, in ComponentReferencesFactory
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fontTools/ufoLib/glifLib.py", line 539, in getComponentReferences
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fontTools/ufoLib/glifLib.py", line 335, in getGLIF
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fs/wrapfs.py", line 342, in readbytes
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fs/base.py", line 603, in readbytes
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fs/osfs.py", line 630, in open
  File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/fs/base.py", line 1553, in check
fs.errors.FilesystemClosed: attempt to use closed filesystem

Has anyone else experienced this and/or solved this? Since it happened on the one UFO file, it's now consistent with every UFO on my machine — a major issue for me, to say the least, as I'm supposed to deliver the Greek set before the end of the week.

Any help would be greatly appreciated.