The failure to generate instances began when I added 73 new glyphs, though Skateboard continued to work and fonts would generate. I appreciate any help.
This is the traceback when DesignSpaceEdit fails to generate instances:
File "/Applications/RoboFont.app/Contents/Resources/lib/python3.7/vanilla/vanillaBase.py", line 506, in action_
self.callback(sender)
File "/Users/gregory/Library/Application Support/RoboFont/plugins/DesignSpaceEditor.roboFontExt/lib/designSpaceEditorwindow.py", line 1656, in callbackGenerate
if self.documentHasStructuralProblems():
File "/Users/gregory/Library/Application Support/RoboFont/plugins/DesignSpaceEditor.roboFontExt/lib/designSpaceEditorwindow.py", line 1579, in documentHasStructuralProblems
checker.checkEverything()
File "/Users/gregory/Library/Application Support/RoboFont/plugins/DesignSpaceEditor.roboFontExt/lib/designspaceProblems/__init__.py", line 155, in checkEverything
self.checkGlyphs()
File "/Users/gregory/Library/Application Support/RoboFont/plugins/DesignSpaceEditor.roboFontExt/lib/designspaceProblems/__init__.py", line 446, in checkGlyphs
self.checkGlyph(name)
File "/Users/gregory/Library/Application Support/RoboFont/plugins/DesignSpaceEditor.roboFontExt/lib/designspaceProblems/__init__.py", line 484, in checkGlyph
if not 'name' in ad:
TypeError: argument of type 'RAnchor' is not iterable