Project is available at the Snapcon Downloads, but it's copyrighted material of @s_federici. There is also a working link, at the bottom of this topic
Why do you want to start with Javascript? With its macro capabilities, context management, first-class procedures, lambda's, Snap! has enough power to make such a project without JS.
Every link I can find to download it is dead, so am I one of the few that has it downloaded? @awdeni ill try to upload this somewhere, and theres an example with it that already has c.
Edit: NVM-
The time on your computer usually has to match closely with the website server in order to work, and also there's certificates that expire, so you have to have your computer time correct.
I can't actually see if I also get the problem, because I'm on my school wifi, but I can see if it happens to me too.