Rascal Tutor is not loading after fresh install on mac

After a fresh install of Eclipse for RCP and RAP Developers and Rascal through the Stable update site on Mac OS, the tutor fails to load. The below message is displayed in the opened window:

/TutorHome/index.html not found. java.io.FileNotFoundException: |boot:///courses/TutorHome/index.html|

The installed versions are: Eclipse for RCP and RAP Developers Version: Oxygen.1a Release (4.7.1a) Build id: 20171005-1200

Rascal Plugin version 0.9.0

Mac OS Sierra 10.12.6 (16G29)

Anyone know how to solve this?