Administrator Heinz Flichtbeil 1609 Posted October 11, 2016 Administrator Share Posted October 11, 2016 Hello, sometimes there are problems with the MAC OSX installer. You get the message: ...<addon...> is damaged and can't be opened. You should move it to the trash. Or: .... cannot-be-loaded-because-the-developer-cannot-be-verified ..... (Catalina Message). Please try this: Go to System Preferences. Security & Privacy Change the following settings (possibly temporary): General tab, allow applications downloaded from: Here select "anywhere". May be you have to open the little padlock symbol at the left bottom of the window before (Admin password required). After the installation you should set yor gatekeeper with higher security (as you want) again. Another way ist to use the right mouse button and start the application (with open). Sierra and High Sierra (up to Catalina): Here the option "anywhere" don't exists anymore and without some changes the right mouse button solution don't work. You only can reconfigure your gatekeeper with a terminal command to the El Capitan standard (with "anywhere" available): Open a terminal app. Put in this command: sudo spctl --master-disable Now "anaywhere" is available and you can install your app like described with El Capitan (see above). After that you shall enable your gatekeeper (with Sierra Standard) again with this command: sudo spctl --master-enable You need administrator rights for that. Here you find an article about the problem: https://www.tekrevue.com/tip/gatekeeper-macos-sierra/ And see here too (for Catalina): https://forums.x-plane.org/index.php?/forums/topic/193236-macxpl-cannot-be-loaded-because-the-developer-cannot-be-verified/&tab=comments#comment-1774578 All steps with your own risk. Greets Heinz Link to comment Share on other sites More sharing options...
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