I was able to add a Class Settings interface to my player Blueprint earlier, but now I can't.
A few days ago I was making a health system for my game, and it was working fine other than the death system not working. I made a new character Blueprint to test the problem and fixed it, and that test character ended up being better than the previous one. Until I noticed that I couldn't add a Class Settings interface for the health bar; no error or anything, it just didn't work. I went back to the last character Blueprint that had a functional health bar, and I tried deleting the interface. I couldn't re-add it at all. Undoing the action didn't bring it back, and trying to add it back through the drop down menu didn't work either; once again no error or any indication of an error. I'm pretty stumped. I've only been using Unreal Engine 4 for around a week, and I have no idea what else to try. I remade the Blueprints too, but it didn't work anyways. Also, in case you're wondering, this was all done on the same UE4 version. I'm not sure if this is a bug or I'm just messing something up.
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