I'm not an expert, but I noticed that many bugs are linked to the stats somehow. For example, I always had a bug where Lucile's massage scene's pictures got stuck in my background in version 0.61. When I got her Trust to 50, the pictures disappeared the second after. Same for Vera. Trying to peep at her twice in a row results in an endless looping scene and unavoidable crash. Again, this bug disappeared when her stats rose to 50. As I said in an earlier post, the biggest bug I met until now was in 0.70, with Doyle who kept on sticking with me, even though I used the ring to make him leave. In the end, I walked to the prison in the basement in order to dismiss him. The night after, I got the robber/cop scene.