Storyline 2 not replaying
I published my first reusable learning object with the web option for a course I took last October in Instructional Design. I'm coming back to it now to try and open it in Storyline 2, which I have installed on my Mac Book Pro. I used the version with has .story as the extension, which my instructor advised was the one I published. I know I used a link to post it to the web and play it when I was in school. My instructor told me it should play by just opening it in Storyline but it's not converting to Storyline 2, nor is it playing.
I have searched the discussion boards to try and find information on this topic; there are variations of discussions but nothing specific to this issue.
I'm new to Storyline and would appreciate any input.