I Was devastated, but my sister and her guests loved it. However, I still want to know what went wrong, so I can fix it before I get another order from someone who ISN'T related to me.
I usually make cupcakes and don't have this problem, but I have noticed over the months that sometimes when I store my frosting it gets those polls of butter. Usually, I correct the problem by remixing it and everything's okay after that.
BTW, I live i'm the Caribbean, so it's pretty hot here. I don't know if that has anything to do with it.