I was trying to make a new project in VX Ace for RMN's Birthday, when something went weird and the program tried to make the new game in my Luxaren Allure folder for some reason. So then Luxaren Allure got renamed to Happy Birthday and the RTP flag on the Game file got changed back to "RTP=RPGVXAce"
I have fixed both these things, and the game seems to work fine. I worry that something else might be wrong with it that I don't know about, but so far, so good.