So, I messed around with some Things I Should Not Have Touched, and I managed to get four semi-playable mummies in my house, which was entertaining for a while. Then I killed them off by forcing their age transition, and I started getting the "Flagrant Error" messages. Eventually I got the one informing me that my save was corrupted and had turned into a BFBVFS. So I thought, what do I have to lose, and tried to take a picture. It worked.
I do not recommend this as a solution
Edit: GAH...new neighborhood, and I can take photos at home, but I can't take them on an adventure where I need to. I give up.