The following warning appears:
This happens both when I save and the autosave (which happens often). It is a modal box and interrupts workflow.
No other applications are running, and the issue survives program and operating system restarts. What could be causing this?
(This issue is new with Mavericks / Keynote '13).
sudo egrep -i '(keynote|\.key)' /var/log/system.log