Hello,
I was able to reproduce a file corruption on Mac OS 10.9.3.
1) Create a new document in textedit and save it in an already encrypted boxcryptor folder.
(That means this file will also encrypted)
2) Close the document
3) Reopen this document in textedit
4) Make some modifications, save the document via the CMD+S key combination, press 15 times fast one after another.
(In German: Wenn die CMD+S Kombination nur 10 mal hintereinander gedrückt wird, so tritt das Problem nicht so häufig auf.
Je häufiger die CMD+S Kombination schnell hintereinander gedrückt wird, desto wahrscheinlicher ist es, das das File danach korrupt
und nicht mehr verwendbar)
5) Close the document. There pops-up an window " the document is saved on a location where permanent saving of versions are not supported" , click okay
6) Try to reopen this document, you get the error message "this document could not be opened".
(If you are able to open it, repeat from 4) and increase the number of CMD+S combinations, fast one after another)
----- Of course normally you would press only one time the CMD+S combination, but a good software should also
work when I press 1000 times the CMD+S combination, and a file corruption is not tolerable ! -------
greetings
Sven