The Hadoop Fundamentals I - Version 2 course requires students to download the IBM BigInsights Quick Start Edition VMWare image (free) from an IBM Web site.  After downloading, a few students have complained that uncompressing the image returns an error that says the image is corrupted.  If you use WinRAR you may get such an error message. Uncompress the file using the free open source 7zip software instead to get past this problem.