Dont know if it's the same thing but the bug is on line 74 of file eveng.js:
case 2: // include
{
var inc = new cr.eventinclude(this, parent, m);
(...)
Undefined is not a function. So eventinclude is probably undefined. It appears there's other files involved too. Just check chrome debugger.
It's a critical bug as it prevents the game from running completelly.