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davidfor · 11-16-2020, 06:37 PM

Epubs are just zip files with a different extension and some expected content. The last line says the book is not a valid ZIP file. That suggests the file you downloaded is corrupt. You could try and open it with a compressed file tool and seeing what error it gives. Other than that, you could try to download the book with a different browser, just in case something strange is happening. And report to the source of the file that there is a problem with the file.

11-16-2020, 06:37 PM	#2
davidfor Grand Sorcerer Posts: 24,905 Karma: 47303824 Join Date: Jul 2011 Location: Sydney, Australia Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos	Epubs are just zip files with a different extension and some expected content. The last line says the book is not a valid ZIP file. That suggests the file you downloaded is corrupt. You could try and open it with a compressed file tool and seeing what error it gives. Other than that, you could try to download the book with a different browser, just in case something strange is happening. And report to the source of the file that there is a problem with the file.