Message says can't access Engage interaction

I just bought  a new computer and uploaded Articulate on it and am now trying to run a course I created on the new computer, but am getting blank white screens on my course for any slide that is created using Engage.  When I click on the button to edit engage interaction I get a message that says the following:

"Unable to access interaction Course objective.  Please locate the interaction."

 I can see the Engage file with the interaction in it, but the course just does not seem to read it.  Anyone know what I may be doing wrong?  Thanks. 

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