I've just now uploaded a new file, please download Project-Perfect-Citizen-188.8.131.52.zip from our project page. The saving issue should be resolved. Can you give me a few more details about the level you left off on? I'd like to try re-creating a save file for you and will try my best to provide instructions for using it in the game.
EDIT: Changed the version number to be consistent with our numbering scheme.