Just a quick note since Heroine Generator 3 put the female body parts at the base of the generator folder. Since this is a bit different than just downloading and extracting the files from RMW, I thought I would quickly go through the recovery method for the Steam version.
- Rename the Generator folder something else, like "00-Generator-Original" (the double zero's will put it at the top of the file list in most cases)
- Close any instances of MV
- From Steam, right click on MV to bring up the context menu
- Select "Properties"
- From the properties window that appears, find the tab at the top "Local Files," and click that
- Press the "Verify Integrity of Application Files..." button
- Allow Steam to download the updates
This will provide you with a "vanilla" generator folder with the heroine3 body files at the base of the new generator folder, and the default male/female bodies within the directory tree. Copy any files you need from the new generator directory back to your working directory. Rename the new "generator" folder to something like "A-Generator-Default" or something meaningful to you, and rename your previous working directory back to "Generator."
Also this is a good way to make sure you always have a working generator to fall back on. Even if your Generator works perfectly, having a "clean" generator folder is nice to have!