If you listen to lesson 11, I explain at 4:00 that we cannot redistribute that particular script so you must search online for "batch vector to shapes". Now with that being said, it looks like website for the third party distributor that was providing the script is no longer working.
Unfortunately we still cannot give away the script because it does not belong to us.
The good news is if you have upgraded to After Effects CC from CS6 the script is no longer necessary because you can click multiple vector layers and convert to shapes all at the same time.
I'm sorry for that issue and I hope you continue to follow along with the course!