[Rellwood]

calibre, version 5.4.0
ERROR: Unhandled exception: <b>FileNotFoundError</b>:[WinError 2] The system cannot find the file specified: 'C:\\Users\\Robin\\column_icon_rules.rules'

calibre 5.4 [64bit] embedded-python: True is64bit: True
Windows-10-10.0.18362 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.18362')
Python 3.8.5
Windows: ('10', '10.0.18362', '', 'Multiprocessor Free')
Interface language: None
Successfully initialized third party plugins: Amazon.com Multiple Countries (1, 0, 0) && CalibreSpy (1, 0, 82) && Count Pages (1, 11, 0) && DOC Input (1, 0, 1) && Diaps Editing Toolbag (0, 3, 7) && English Noun Frequency (1, 0, 12) && EpubCheck (0, 2, 3) && EpubMerge (2, 11, 0) && EpubSplit (3, 0, 0) && Extract ISBN (1, 5, 0) && F_rating (3, 2, 0) && Fantastic Fiction (1, 4, 0) && Fantastic Fiction Adults (1, 2, 0) && Find Duplicates (1, 8, 3) && Generate Cover (2, 0, 0) && GetFileName (0, 1, 0) && Goodreads (1, 5, 1) && Goodreads Sync (1, 14, 3) && Goodreads_Rating (3, 1, 0) && Import List (1, 5, 1) && Job Spy (1, 0, 188) && Kindle hi-res covers (0, 5, 0) && Modify ePub (1, 6, 1) && Overdrive Link (2, 43, 0) && Quality Check (1, 10, 1) && Reformat plugin (1, 9, 5) && Search The Internet (1, 8, 0) && User Category (1, 5, 5) && View Manager (1, 6, 0) && Wikidata gui (1, 3, 0) && Overdrive Link* (2, 43, 0)
Traceback (most recent call last):
File "calibre\gui2\preferences\coloring.py", line 1093, in export_rules
File "calibre\gui2\win_file_dialogs.py", line 296, in choose_save_file
File "calibre\gui2\win_file_dialogs.py", line 232, in run_file_dialog
File "calibre\gui2\win_file_dialogs.py", line 230, in fix_path
FileNotFoundError: [WinError 2] The system cannot find the file specified: 'C:\\Users\\Robin\\column_icon_rules.rules'

I tried saving in other folders as well.

Any suggestions?