thanks for uploading the quiz to my server.
I see what you mean about the results of the quiz not being available. I think it is because the quiz uses images in the questions.
I tried the quiz with the latest version of the HotPot module (v2.1) and it works better, in particular the results of the quiz can be seen. Here are the access details for your quiz running under HotPot v2.1:
If possible, I suggest you upgrade to the latest version of the HotPot module, available from the Moodle downloads page:
You do NOT to upgrade your Moodle to 1.6 in order to upgrade your HotPot module. However, now that Moodle 1.6 has been officially released, I recommend you make a plan to upgrade your whole Moodle site when you can set aside a bit of time to do some backups and then upgrade.