Be sure to download one video at a time, to help the download complete in a short amount of time. Downloading too many at one time can add to the total time of the videos downloading and if you try to open up the first files you started with, it will not show it as a mp4 file, which will cause it to look like it is not working. If you have started loading and click on a number to download at once, then walk away for awhile and wait for all to download. In the end they will all be there.
Posted in: Download Issues