You can get it working again by finding the PowerPoint Options menu. Then go to Add-In. In the Manage dropdown menu, select distabled Add-ins. Select Presenter and enable it. Restart PPT and it should be there again.
If/when PPT or Presenter crashes a dialog comes up that is asking if you want to disable the Presenter add-in. Click no, and you won't have to go through the above steps.
Dear Ms. Jennings,
I still have problems and am unable to load and use Presenter to
prepare my slide presentation. I learned subsequent to our discussion
that there is a conflict between McAfee virus software and Presenter. I
can run Presenter if I disable McAfee and reinstall Presenter, but I
cannot/should not work without virus protection.
Help still needed.