There might be another PowerPoint Add-On that is not playing well with us. So, we will check the add-on
Click on File/Microsoft Button to the top left of PowerPoint
At the bottom of the menu there should be a button for "PowerPoint Options"
On the left of the Options menu click on the tab for Add-Ins
Use the Manage drop-down list at the bottom of the window to select COM Add-ins, and click the Go button.
Deselect the checkbox for all Add-Ins except "PollEv Presenter"
Look for Jive, Microsoft Lync or AbDocs. These two are known problems
Click the OK button, then Close and reopen PowerPoint for the change to take effect.
- Try to present a Poll Slide in Slideshow mode