“Termination Reason: EXEC, This UPX compressed binary contains an invalid Mach-O header and cannot be loaded,” the message reads.Īccording to Mac Kung Fu, it is keygens’ reliance on a free multiplatform executable packer that is causing the issues. When people try to run keygens and cracks that are bundled with many Mac pirate software releases, the tools break and offer the following error report. This is often straightforward but for users of the macOS Sierra, the latest update to the Mac operating system currently being rolled out by Apple, things are proving problematic.

This is achieved by running a key generator or “keygen”, a tool bundled with a pirate release by the team who cracked it. These range from the very simple to the fairly complex, depending on the strength of the anti-piracy technology deployed by manufacturers.Īt the lower end of the scale, users are sometimes required to input a fake serial number into their software. Those who prefer to pirate rather than pay for their software often face installation issues.

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