The professor who taught me Strauss wrote a book in which I thought I spotted a Straussian "error": "Hilter." I asked him about it & he shouted, "G*d D*MMIT, Joe!" Joe was his grad student assistant who had edited the book. How one fails to catch "Hilter" I truly do not know.
(I did spot another error, though, a slight, though meaningful, misquotation of scripture, that the professor admitted was intentional. "I'm playing games with the liberals," he said.)