When both TurningPoint and Panopto are installed on the same computer, PowerPoint Polling will crash when opened.
TurningPoint version 5.2 resolved this issue, as did Panopto version 4.4. Update to the latest version of TurningPoint 5, available for download here, as well as the latest version of Panopto. Once both programs are updated, disable the TurningPoint Add-In Always Loaded option. This must be done in addition to the software upgrades.