I have been using airdrop to transfere a ~100GB Aperture library from one Mac to another. After ~10h of copying, the file on the destination Mac was only 20GB of size. I was able to open the Aperture library, but a lot of master files were missing.
The strange thing is Activity Monitor showed that all ~100GB of data were transfered, but at some point the files just got lost.
Any ideas what may have gone wrong?