Could be just that since you have done a lot of modding and maybe there was another file that's being read for ficho. If you can tell me what file it is exactly or some sort I may be able to send you over the original since I have the original textures of FH backed up on my computer. Material files and all c:
FeralHeart will only read files contained within the FeralHeart folder and all subfolders.
If you think there's a possibility that FH might be reading a stray file somewhere, a quick way to try and find it (if you have Windows, which I'm hoping you do) is to put an asterisk in the search bar and hit enter,
(https://i.gyazo.com/3e900cbbddb35290d68910de41fddfed.png)
which will bring up ALL files in the FeralHeart folder and subfolders. Then you can right click on the results and sort by type,
(https://i.gyazo.com/efab8b6071baa052981161508d816f97.png)
and then just scroll down until you start finding jpgs and pngs, and see if anything matches that texture. Which I believe would be called CeilingTex, but it's possible it could be something else.