Video Down Loads Stopped Working

[DrT]

When upgrading to OS X 10.12.2 down loading videos on Vienna 3.1.8 stopped working on tumbir sites.
Right clicking on video image displays option to down load video, but nothing happens when down load clicked. Works fine for photos.

Any suggestions - is there a setting which turns on or off the function.

[NivaR]

Just learned about Vienna. Enjoying it greatly but I have this exact problem. Videos won't open in tabs, nor can they be downloaded although the right click options are there. I'm using High Sierra.

Is there any solution?