Yeah, it's actually works. Thanks for resolve this error.

However, it has to be off from automatic updates and remain as special version 7.15.

It's not working, have clear cache and cookies, even tried on other pc with Firefox Nightly 55.0 32bit (win 10 32bit).

I think it still not compatible with Firefox Nightly 55.0 (which eventually move to Firefox 57.0 with fully support web extension later on)

Browser: Firefox 55.0 Windows 10
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:55.0) Gecko/20100101 Firefox/55.0

Same. Will stay at version 6.20 at this moment.

Nope, it seems not working and the question mark forever there even you click it, currently I'm downgrade to version 6.20 to continue use it. Any advice? Your help is much appreciated.

Savefrom.net icon show error and not working...