often this is the case. Moreover, with updating drivers being as easy as one, two, three (if you use a driver update software), there’s no reason not to give this solution a try before
This is just a guess, but this sounds like a permissions/sandbox issue with the Brother driver, that they are not allowed to write there, even though you gave full access. Again, just a guess, but there may be some helpful information in /Utilities/Console if you filter for "sandbox" o...
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