Today I uploaded and installed Hotpot 1.4.1. I also added the hotpop.php to the moodle/lang/en folder. I went to admin and installed it. I saw the tables created message. I am now in a course, I choose add activity/hotpop and I get the window where I give a title, description and choose the file to upload. The file seems to upload fine, using "choose or upload". I can see that the file is there (files/cf101/hotpot/rauding-jmatch-v01.htm). But then when I click Save Changes I get a strange error message. Frustratingly, it doesn't even stay onscreen long enough to copy it. I think it says something about "warning file failed" and "No such file / directory". Then it quickly goes to the "No action was specified" screen. Hotpop looks really cool. How can I get it working?