Jean-Pierre Pavlak has informed me of an error in the hotpot2db.php file included in the original distribution of 20 February. This prevented the results from getting written to the databased even though the HotPot quiz itself would have operated normally. This problem has now been fixed in the fzip ile that is available online at:
If you have already downloaded the module you will need to replace just this one file, which I have attached here. Sorry for the problem -- I was compromised by a missing comma!