Unable to edit Engage updated from 09 to 13
I need to update a course that was created in 09 a few years ago. When I went into the course it insisted that I update the course to 13 which is our current version. This has not been a problem previously, but now when I click to edit an Engage I keep getting the Articulate Error Report and it won't allow me to get into the Engage.
I tried duplicating the slide and then deleting the first one. I think something like this worked a few years back, but no luck this time.
What can do?