
A/ when (approximately) did you see the problem for the first time ? Are
you able to correlate it to a special event, like a Firefox update,
installing a particular tool or addon on your system, ... ?
It first occured at, for me, around the start of July 2015. The exact date, is unknown to me, but it was after the recent FireFox update (39.0). Adobe Flash has since asked me to update. I did this the other day, but it is asking me to do it yet again. Which very odd.
B/ what version of Firefox are you running ?
39.0
C/ what version of Video DownloadHelper are you running ?
5.3.1.1-signed
D/ does installing the latest development version http://www.downloadhelper.net/install-beta.php?version=5.4.0a5 solves the problem ?
Nope. Literally just tested it with this video:
https://www.youtube.com/watch?v=ZmrCoGj9m2YI still got the same two results (screen capture attached)
E/
if you disable temporarily the other add-ons (particularly the
YouTube-related ones), are you still missing the YouTube variants ?
Yes
F/
can you make sure the settings "Auto-Detect" in "Gallery capture" and
"Applet auto-detection" in "Screen capture" are on (a user reported this
fixed her problem) ?
They are already enabled. Disabling and then re-enabling them did nothing to help. But it may need to be noted that my Blacklist is now empty without my doing.
G/ does using a previous version of VDH like 5.2.0 https://addons.mozilla.org/en-US/firefox/addon/video-downloadhelper/versions/?page=1#version-5.2.0.1-signed changes anything ?
Not a bit.
Here's a video of me trying older versions and then the latest version with zero success.
LINK: http://sendvid.com/yciuryxhEMBED:<iframe width="560" height="315" src="//
sendvid.com/embed/yciuryxh" frameborder="0" allowfullscreen></iframe>