6/18/2023 0 Comments Omnigraffle 6 high sierra![]() OmniGraffle 4 predates the entire Gatekeeper ecosystem, so it lacks the code that Apple is looking for to validate the app’s legitimacy. Opening OmniGraffle v4 on macOS Sierra 10.12 can result in an error message of “”OmniGraffle.app” is damaged and can’t be opened.” This can appear due to Mac OS’s Gatekeeper, which checks for a developer signature to make sure this app came from a trusted source. ![]() You can learn more and download a trial here OmniGraffle 4 on macOS Sierra OmniGraffle 7 was released on October 10th, 2016, and we’re happy to offer an upgrade discount for existing customers. We haven’t tested OmniGraffle 4 against Mac OS X 10.6 or later, so it’s possible your mileage may vary when running this application on newer versions of the OS. Please note that OmniGraffle 4 was last updated in 2008 for Mac OS X 10.5 Leopard, and as such, does not contain any specific fixes for newer operating systems. If you’re looking to reinstall OmniGraffle 4 on an older system, provided below are download links to re-download the latest version of OmniGraffle 4 for Mac:
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