For those who doesn't have enough space on Dropbox, there is a really easy, good and fast solution that I always use when downloading large files. (Until recently I only had 6 Mbit unstable ADSL, so resuming a download was imperative)
iGetter download manager.
Everything I have ever downloaded with it works properly.
Also, you can add the user and password for resolume.com so in essence you can add all your downloads in a cue and it will login and download the correct file with ease.