Mac OS X Mavericks, 10.9, users will experience problems using web folders (e.g. HyperDrive) due to a known issue with the operating system's WebDAV implementation. See this Apple forum discussion for more information. Users may experience frequent server disconnects, inability to upload files, and opened files displaying as blank.
When attempting to upload a file, users may encounter an error message such as:
Until there is a fix for this, we recommend using a WebDAV client for Mac OS X such as WebDrive, Cyberduck, or Interarchy, which allows users to connect to their portal's web folders without using Mac Finder.
Click here for instructions on configuring Cyberduck.