I tried renaming a few tags and received this error:
Code:
Traceback (most recent call last):
File "site-packages\calibre\gui2\tag_view.py", line 1496, in setData
AttributeError: 'TagsModel' object has no attribute 'refresh_required'
Resetting Calibre accepted the name change, but then if I tried to rename another tag I would get the same error.