I bought a brand new MacBook yesterday and Flash will not download on either Safari or Firefox. I have installed & uninstalled my brains out. I have troubleshooted as well. There are no issues with storage, older versions, plug ins are enabled, etc. It shows that it is downloaded, but when I attempt to use it, open it or go to a website that requires it, it is not recognized. When I attempt to open it from the desktop it wants me to download it again. I am VERY frustrated. I did not have any problems when I did this with my MacBook several years ago.