he claims he recorded conversations where he admitted to performing oral sex on mclachlan. he says when he went to the university about his complaints, he was turned away. >> i was treated with hostility, denials. i was told that my complaints with heresay, despite the fact that i offered them tape-recorded evidence. >> reporter: mclachlan said the penn state authorities refused to even investigation his claim. >> they said they wouldn't be investigating anything of that nature, that this was a respected and important part of penn state and basically how dare you make such an accusation. >> reporter: he finaled a civil lawsuit, which was settled for an undisclosed amount. the professor retired in 2002 but remained affiliated with the university. penn state officials declined to comment, but it could be a legal nightmare for the school. >> if a plaintiff's lawyer can argue that there was a pattern, that sexual abuse or assault complaints were made to the university and they just sort of disappeared, well, that's a classic civil lawsuit. >> reporter: legend fall and a communi