However, when using backup software, or migrating to another Mac, the file types may not be retained. You can simply copy back these folders from your original Home folder, or use Joe Weaks' File Type Fixer to restore the correct File types.
If you simply delete your
~user/Library/Preferences/Accordance PreferencesAccordance will recreate them from the Preferences in the Accordance folder so you will have your modules but you will lose your ranges, settings, arrangements of modules, etc.
As long as these Preferences are bad or corrupt (which can also happen occasionally in normal use since these files are constantly being updated), reinstalling Accordance will make no difference. It is rarely necessary to reinstall everything, please do it only as a last resort. The Preferences are the key to most issues with Accordance not running.
In addition, if you get an error message about one of these files, you can simply delete it and Accordance will recreate it: