When using the WonderShare AllMyTube video downloader software, sometimes all it takes is a single try to download a video.
However, if you receive a message that says Failed to Download, you may want to keep trying the download. Click the retry button in the download queue. It may take 5 or 10 tries before some videos will download. It’s not clear why this happens.
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UPDATE: 23 May 2015
Some reports indicate that Wondershare recently stopped working with Facebook. In the past when there have been compatibility issues, there is an update to correct the problem. Hopefully that will happen soon.
Iowa City Technology Services 