I mean.. ive been using them for a few updates now and havent had a problem or had to change them : o
Xiview modifies the game files.
If the developers update the game and that file in particular (they did that today) then the mod no longer has key data in it and so you crash.
They updated the quest page.
Get the latest version of Xiview that has the updated data in it.
Xiview can go a long time without being updated, but they changed it today and broke it.