Originally Posted by DjNDB
It's possible that your issue is caused by having multiple prefs.prop files, which sometimes happens for unknown reasons.
There should be only one prefs.prop, and that's in the savegame folder:
~/Library/Application Support/Telltale Games/TheWalkingDead/
Please check if there are additional prefs.prop files in the install folder or its subfolders.
If so, make a backup copy of the prefs.prop and delete it from the install folder.
If that doesn't help, make a backup copy of the savegame folder's prefs.prop, and then try copying the install folder prefs.prop to the savegame folder.
Thanks for the reply. But unfortunately, the problem still persists.