Whoops! I messed up! (Patreon)

Hello everyone.  You may notice that my latest video did not stay up for very long.  It suddenly dawned on me that I may have messed up badly, and that I should take the video down before it got me into trouble.  I shall replace it with a similar video, and you will of course not be charged for my incompetence.  Possibly I am being paranoid, but I'd rather be safe than sorry.  

I hope that you will forgive my blunder.  I hope to get the replacement up within a day.