Error when publishing in Presenter 13

I have some courses created with a template that was originally created for use with Presenter '09. Whenever I try to publish, preview, or access slide properties in a course created with that template using Presenter '13, I get the following error: "We're sorry, something went wrong with Articulate Presenter '13 and it might close." Courses in that template preview and publish ok with Presenter '09. Any ideas what in my file might be causing the problem?

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