WowAce

What steps will reproduce the problem?
1. I logged off yesterday night, SUF was normal
2. I logged on this morning, WoW crashed at character screen, then I logged on again
3. SUF was completely reset, all settings and profiles gone.

What is the expected output? What do you see instead?

I wanted to see my usual UI instead I saw the SUF default UI.

What version of the product are you using?

v3.8.10

Do you have an error log of what happened?

No error log.

Please provide any additional information below.

Luckily I saved the WTF and Interface folders from my WoW folder on 5th of October, so I just deleted them from my current file (22nd October) and replaced them, which fixed the issue. I'm basically asking if there is a fix that stops the addon literally resetting completely without a warning or anything. It takes me a long time to set it up and it's not the first time it has happened (hence the reason I back the WTF and Interface folder up regularly).

Config resets are not a SUF problem. Any type of hard exit of WoW will cause configs to be reset depending on situations. It's a Blizzard issue.