Hello,
The EyeTracker element has so far been pointing to a JS script file directly hosted on webgazer’s servers, which is regularly updated, sometimes causing incompatibilities, and recently their ssl certificate was expired, preventing browsers from accessing the script.
I have updated the code of PennElement_eyetracker.js so it now points to a script file hosted on PCIbex’s servers, which should take care of both issues.
Could you please try updating the content of your PennElement_eyetracker.js file with the code a the link above and let me know if that solved your problem?
Jeremy