I am at a loss - been unable to export any photos via the File>Export>Versions or Originals option in Aperture 3.4.
This seems to have happened after I upgraded to the most recent version of Aperture, but I'm not 100% sure this is the problem. I have tried exporting a single photo and multiple photos. Every time I get an error dialog box, Export Results, that states "Export Versions Complete with Errors". I then states 0 of 1 file has been exported (the 1 changes based upon how many I've attempted to export). Below that it states "The export operation failed to create a file for the version identified below". It then lists the filename of the image I attempted to export.
I've tried removing, then reinstalling Aperture through the App Store - no luck.
On a side note, I used iPhoto to export the photos from my Aperture library, and it works fine.