Many settings pages have very little error checking. You can easily alter a setting which will result in a non-functional system, and short of restoring the database from a backup, there is no way to undo your changes.
Edit settings for: MythWeb
Prefer channel number over callsign:
Show mouseover information about programs:
Show the channel icons:
Sort channel list by channel number (checked) or by callsign (unchecked):
Display Genre Colors:
Show video covers on the video interface: