Articulate/PowerPoint add-in causing shutdown issues

Hello - I have recently started having a problem with my PowerPoint program. When I go to close the program, I get an error - "Microsoft Powerpoint has stopped working". During my troubleshooting I found that the Articulate.Presenter.lpc add-in was the problem. When I disabled it, PowerPoint would shut down normally. I then turned it back on and the problem returned. 

Can someone give me some insight on how to fix the problem? Is a repair necessary for this? I don't use the Articulate tools in PPT that often but I would like it to work when needed. Thanks!