I ran into this issue as well after giving Penny the second dose of Serum. This is from a clean install with Base Image Pack 13 + Image Pack Update 14. It looks like the file paths for the Penny images are incorrect in her js file. The game is trying to load images from "pics/penny/action/gifname.gif" when there isn't an "action" folder inside the "penny" folder. I edited the imgPenny.js file to make these images load from "pics/penny/gifname.gif" and it seems to be working correctly now.Seems many pics straight up don't work now... I restarted the game and Penny's blowjob scene is not visible, her apartment neither and I just kinda quit then. I don't remember there being this much missing last time I played and that was months ago. I did download both image packs as well.