I got following error when I changed a column name from [#]readinglist/Reading List to [#]searchlist/Search List - column type is 'comma separated lust, like tags'.
After the 'mandatory' restart the change had been done
BR
Code:
calibre, version 2.54.0
ERROR: Unhandled exception: <b>KeyError</b>:u'#searchlists'
calibre 2.54 [64bit] embedded-python: True is64bit: True
Windows-8-6.2.9200 Windows ('64bit', 'WindowsPE')
('Windows', '8', '6.2.9200')
Python 2.7.9
Windows: ('8', '6.2.9200', '', 'Multiprocessor Free')
Successfully initialized third party plugins: Goodreads && Favourites Menu && View Manager && Resize Cover && Find Duplicates && EpubSplit && Count Pages && Barnes & Noble && Generate Cover && Quality Check && Beam Ebooks && Extract ISBN && Walk Search History && FictionDB && Drop Search Results && Generic Identifiers && Import List && Diaps Editing Toolbag && Modify ePub && Reading List
Traceback (most recent call last):
File "site-packages\calibre\gui2\preferences\columns.py", line 213, in edit_custcol
File "site-packages\calibre\gui2\preferences\columns.py", line 117, in setup_row
KeyError: u'#searchlists'