Keygen free mac windows download from here. Jumping pillows open open keygen.exe on mac. As you know, MacOS platform is a closed system, so it's quite selective for games and apps. So, if you are also facing the same problem on your Mac when running software or games on your Mac, then read on this post to know how to fix the 'Application Can't Be Opened on Mac' problem. How to Open Files with Terminal on a Mac - Duration: 0:39. How to run Xforce Keygen Mac OS fixed - Duration: 2:43.