I'm a little annoyed that what you choose do has no apparent pattern on success. The good news is that you can save scum to reroll results, but I can't figure out a way to consistently raise the lust bar. The only reason I'm not completely annoyed is because I'm a degenerate who enjoys these kind of don't-get-caught scenarios.
I'm definitely liking girl #3's look, but I can't tell if she's supposed to be a cop or not. Hoping she is though. Surprisingly not too many women cops in these kind of games.
If you're playing a save from a previous version that could cause it. If renpy gives you the option to ignore the error it shouldn't come up again (unless you load from the old save again). If it's something else you can post here: