That's a repair, not an update (and yeah, it does show a notification "failed to update" or sth like that). There's a known issue with Enchanted by Nature when you try to repair it, it doesn't recognize the pack correctly as bought and in the library. They are aware of this issue and are working on it (according to the main post about it) since it premiered as many of us have the same problem. Unfortunately, there's been a radio silence ever since which means that they're probably still scratching their heads, thinking about the cause of this problem.