Hi there, I had FFP 2 on my desktop and had removed regular FF. Everything was working well. To backup and upgrade to FFP 3.0.5 I copied to my usb thumbdrive then successfully followed instructions here:
https://portableapps.com/support/firefox_portable#upgrading
Better Youtube greasemonkey thingie [stops automatic play when opening video] works fine on both my old desktop FFP 2 and the copy I made to the thumb drive. It is not working in the new FFP 3 either from the thumb or I repeated the whole update process above to my desktop copy.
I did copy and paste the plugin folder as directed. I then went back and found the specific greasemonkey folder and copy pasted that as well for the heck of it.
Some months back I did have to jump through some hoops to get better youtube working in FFP 2, as I recall I disabled it in Firefox options add-ons and enabled it through greasemonkey script [barely know what I'm talking about here, just that I got it working]. None of that seems to work in 3.
Symptoms now shown in fresh FFP3: all my old stuff looks normal, toolbar/bookmarks etc everything transferred nicely. When I go to open a youtube video it says "loading flash player" [as it should], the player then appears with a still image and the play button in the middle [as it should]. When I press play, the player screen fades to black and makes no progress from 00:00 and that's all.
Greatly appreciate any help,
thank you,
Matt