Library Node Editor context menu not working on one specific PC

Version of Kodi: 17.1
Windows Version + Service Pack version: Win7 Pro SP1
Skin: Estuary
Debug log (I’m trying to edit Genre several times): https://pastebin.com/jPKaFgDE
Problem: I get errors for everything in the context menu for Library Node Editor but Move and Add/remove to favorites.

It works fine on my other PC (Win10) which has a fresh install of Kodi 17.1.
The HPTC, which gets the errors, is an old install that’s been upgraded several times and now to Kodi 17.1.

I’ve uninstalled orphaned addons and addons I didn’t use.

I think this is the error but it doesn’t say me anything:

Quote:10:25:32.444 T:2200 ERROR: EXCEPTION Thrown (PythonToCppException) : –>Python callback/script returned the following error<–
– NOTE: IGNORING THIS CAN LEAD TO MEMORY LEAKS!
Error Type: <type ‘exceptions.ValueError’>
Error Contents: dictionary update sequence element #3 has length 1; 2 is required
Traceback (most recent call last):
File “C:\Users\X\AppData\Roaming\Kodi\addons\plugin.library.node.editor\addon.py”, line 835, in <module>
params = dict( arg.split( “=” ) for arg in sys.argv[ 2 ][1:].split( “&” ) )
ValueError: dictionary update sequence element #3 has length 1; 2 is required
–>End of Python script error report<–
10:25:32.465 T:2200 INFO: Python script stopped