I've just replied to you privately, but as Moodle.org seems to be OK for the moment, I'll put it here too:
"You made me laugh! I'm not a genius, just a person who's made a lot of mistakes and learnt from some of them.
By the way, the warning (about not practising on a live site) was not addressed to you but to others less experienced who might read the post.
For teachers to try out, I make a Book version with the original Hot Potatoes navigation. That is, I do when I have the time to make alternative versions of everything."
QuizPort/TaskChain has a huge number of possible settings - I don't think anyone but Gordon masters them all and their interrelated implications. Doesn't mean, though, that they can't easily be used with just the default settings.