I avoided using quick d/l, instead choose download, wait for tab to save file as (have a folder setup for just this app to download to) and then I leave the tab of video to be downloaded open until file transfer is complete (seems to help). Don't do more than a few at a time, and limit the amount of browser tabs you have open and jump around to. If a file screwed up somehow, I'm guessing it my fault or that somehow my ISP was snooping and decided to f*ck w/ the file transfer. The app works.