I am very unexperienced with Macs, so I may be completely off here, but I am able to open ebooks using High Sierra using a right-click "open with ebook-viewer". I am not a MacBook power user by any means, just use it for content consumption and programming javascript but I haven't encountered this error. I wonder what is being done differently.
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Last edited by Pizza_Cant_Read; 12-12-2017 at 10:38 AM.
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