Post #609: 
FrankieH:
I recently updated to latest blender and pme (I don’t like updating in the middle of a project ) I found this command no longer works;
context.space_data.dopesheet.show_only_selected = not context.space_data.dopesheet.show_only_selected
I used to toggle dope sheet visibility icons, the arrow and the ghost at the bottom next to summary. I was hoping you had some suggestions to make it work again. Thanks!
My bad. Forgot about context variable.
You can use C or bpy.context instead:
C.space_data.dopesheet.show_only_selected = not C.space_data.dopesheet.show_only_selected