Keynote Presentation Black Screen
When I begin my Keynote presentation after about 5 slides the screen becomes black. This is the case whether I have it on normal play or self-play. If I click as though I am moving the slides forward and then hit escape I see that the slides have actually advanced the number of clicks I have used but I have been unable to see any of the slides. I have seen this problem discussed on other posts but no one has given a solution. Is there any thing to be done?
iMac 21.5″, macOS 10.12