Continually get repair signal. Spent 2 hours and replaced file 3 times - only on this one file:
"Some controls on this presentation can't be activated. They might not be registered in this computer' This happens after 'PowerPoint found a problem with content in Cancer Awareness Module 1.pptx. PowerPoint can attempt to repair the presentation. If you trust the source of this presentation, click Repair.
I've clicked Repair and all x's appear on the entire presentation and I've clicked cancel and it just goes to a blank screen. HELP!!!!!