[disconnected]

I've just updated from 3.48 to 5.34 and was looking through the various preference sections trying to remember what I'd done previously to get stuff sent to a Kindle to be sorted by last name, rather than first. I still haven't figured that out but, meanwhile, when I clicked on Preferences/Conversion/Output Options I got

NameError.name ‘unicode’ is not defined

calibre, version 5.34.0
ERROR: Unhandled exception: <b>NameError</b>:name 'unicode' is not defined

calibre 5.34 embedded-python: True is64bit: False
Windows-10-10.0.19041 Windows ('32bit', 'WindowsPE')
32bit process running on 64bit windows
('Windows', '10', '10.0.19041')
Python 3.8.5
Windows: ('10', '10.0.19041', '', 'Multiprocessor Free')
Interface language: None
Successfully initialized third party plugins: DeDRM (7, 2, 1) && Amazon.com Multiple Countries (1, 0, 0) && KePub Output (3, 0, 0) && KoboTouchExtended (3, 5, 4) && Modify ePub (1, 3, 13) && Obok DeDRM (7, 2, 1)
Traceback (most recent call last):
File "calibre\gui2\preferences\main.py", line 319, in show_plugin
File "calibre\gui2\preferences\conversion.py", line 99, in genesis
File "calibre\gui2\preferences\conversion.py", line 96, in widget_factory
File "calibre_plugins.kepubout.conversion.output_config ", line 27, in __init__
File "calibre\gui2\convert\__init__.py", line 66, in __init__
File "calibre_plugins.kepubout.conversion.output_config ", line 55, in setupUi
NameError: name 'unicode' is not defined

I clicked ok to get out of it but after that, if I clicked on any other section of Preferences the screen that comes up looks like the new screen is superimposed on a leftover output options screen. Resarting Calibre clears it up but is there any way to access the output options screen should I ever need it?