TorBrowser 5.0.1 fails to download any file from https://mega.nz. TorBrowser 4.5.3 works,
- Try to download any file stored on https://mega.nz with TorBrowser 5.0.1.
- Result: At the end of the download process, you are not prompted to choose where to save the file on your hard disk.
Note that TorBrowser 4.5.3 has not the issue.
Tested with TorBrowser 5.0.1 on OS X 10.10.5.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information