Keynote files deleting after update to 10.8.4
I performed a small edit to a Keynote file today after updating to 10.8.4 last night (used the combo updater). The file crashed during a presentation and I though "no big deal, I'll just re-open it." When I went to find it, it was completely gone. Vanished.
I booted up Time Machine back at the office, restored the file, and chalked it up to some fluke. Then I edited a different Keynote file. It kept popping error messages about not being able to locate media files and I eventually closed it. Again, I went to find the orginal file to re-open and it too has dissappeared. This time, Time Machine wouldn't even let me restore it from a backup.
I ran disk utility and it found minor errors in the volume bitmap and free space remaining. So I booted to the recorvery partition and repaired successfully.
I'm up and running again, but my Keynote file is still missing. I'm afraid to open Keynote again for fear of this happening again.
Is there any known issue with 10.8.4 corrupting the file system, particulary when opening and editing Keynote files?
(15 " Retina MBP, latest model with 768 GB)