5 Replies Latest reply on Jan 25, 2015 5:41 PM by John T Smith

    I am a college student. I am trying to open lesson files my professor downloaded to my zip drive.

    RubyTuesday10 Level 1

      I am a college student. I am trying to open lesson files my professor downloaded to my zip drive. Every time I try to open one, I get the following message "The file "Lesson01(1).zip" is in an unknown format and cannot be opened." What does this mean? I am working on a PC. Is the problem that my professor gave me files that are only compatible with a MAC?