I’ve tried setting up DDG as my default search engine. I’ve followed your video, and several other video’s, but, to no avail. I’ve gone to preferences, picked DDG, and Yahoo keeps coming up as my default search engine. I’m really at a lost here, because it seems like the change should be so easy. I had DDG for awhile and then it went away. It seems that it went away when I did an update for Adobe, but I’m not sure.
My mac book pro is 6 years old an am using OS X Yosemite version 10.10.5