Can't use double-click on trackpad or mouse to open files, pics and videos
Almost new Macbook Pro Retina 15". It was working well but suddenly I can't anymore open files using double-click on trackpad or Apple mouse. I have to use right click and then select open or open with. Going to system preferences select mouse options and then reduce the speed of (double-click speed) did not solved the problem.
MacBook Pro (Retina, 15-inch, Mid 2015), OS X El Capitan (10.11.3)