Just upgraded to El Capitan two weeks ago. I did a clean install from the ground up. I go to render a QuickTime file, Fusion says it is rendering. After the render is complete I go to play the movie yet the file size is Zero KB, not sure why. I tried playing the movie in QuickTime player, it gives an error message. Greeted with the same one in Final Cut Pro X, very confused. I can render out uncompressed. Fine in QuickTime player not so much with Final Cut Pro X, all worked fine under Yosemite.
Really don't want to to downgrade to Yosemite but might have to. Any suggestions are greatly appreciated.