PMFJI, but I recall another user having issues with Martin Green's audit routine. In her case it was the ability to use subforms, but she also noted that wrong record was being recorded when deleting a record. The thread is quite long but may offer some insight. We built a workaround to get an audit trail working for her project. There may be other posts/threads/forums offering a solution to Martin's audit because it has been mentioned as having issues over the years.
Good luck with your project.