My problem . . .

Slide transition durations work fine as long as I'm in the file. But once I QUIT the file – and quit PowerPoint – and re-enter the file . . .

All the transition durations . . . default to one second (!!)

I've tried re-entering these settings several times, but every time I save, quit, and re-enter the file, the transition durations are all reset.

What am I missing???