if i make no mistake, when you create a custom directory UI like TOTO (name it like that
) by default eq is going to try to load all files and this directory if you ask him to load your UI, but if he can find a file (that it's normal when you download piece of art or UI piece) first he's going to write an error BUT after he's going to retrieve it on your default directory if he can't find it on yours.
so it's normal, try to delete files when it's becoming too big.