Sigil crahses when open ePub

Peveks · 05-26-2020, 01:21 PM

Hi

I just wanted to edit a couple of things in an epub file but Sigil even won't let me open it:

Spoiler:

I've attached the problem file. What could it be?

KevinH · 05-26-2020, 04:16 PM

You should never post copyrighted material to our forum. Please respect the copyright of the original author.

Sigil does not "crash" on opening. It reports an error. It can not open the font files which are obfuscated by the adobe font obfuscation algorithm incorrectly. To use adobe font obfuscation, the original dc:identifier must exist in the OPF and it must use the scheme UUID.

Your content.opf does not even have a dc:identifier that uses the UUID scheme. It just has its own identifier. Without the uuid identifier, there is no way to un-obfuscate the obfuscated fonts.

So whatever software you used to create this epub is broken as it clearly uses the adobe font obfuscation algorithm but does not provide all of the information it needs.

The IDPF font obfuscation algorithm will work with any dc:identifier type but the adobe one requires a UUID based identifier to meet the spec.

Peveks · 05-26-2020, 04:48 PM

Please accept my apologies for this mistake and thank you very much for very clear and useful explanation.

05-26-2020, 01:21 PM	#1
Peveks Junior Member Posts: 7 Karma: 10 Join Date: Jan 2014 Device: Kindle Paperwhite	Sigil crahses when open ePub Hi I just wanted to edit a couple of things in an epub file but Sigil even won't let me open it: Spoiler: Error info: Cannot load file /Books/in/Recursion_ A Novel - Blake Crouch.epub: /private/var/folders/m4/cw2wp0wj7j37jp45qk2wmxq80000gn/T/Sigil-xrgHUF/OEBPS/Fonts/font00217.otf: http://ns.adobe.com/pdf/enc#RC: Sigil version: 1.2.0 Runtime Qt: 5.12.7 Compiled Qt: 5.12.7 System: macOS 10.15 Architecture: x86_64 I've attached the problem file. What could it be? Last edited by KevinH; 05-26-2020 at 04:17 PM. Reason: Removed posted copyrighted material.

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05-26-2020, 04:16 PM	#2
KevinH Sigil Developer Posts: 8,478 Karma: 5703586 Join Date: Nov 2009 Device: many	You should never post copyrighted material to our forum. Please respect the copyright of the original author. Sigil does not "crash" on opening. It reports an error. It can not open the font files which are obfuscated by the adobe font obfuscation algorithm incorrectly. To use adobe font obfuscation, the original dc:identifier must exist in the OPF and it must use the scheme UUID. Your content.opf does not even have a dc:identifier that uses the UUID scheme. It just has its own identifier. Without the uuid identifier, there is no way to un-obfuscate the obfuscated fonts. So whatever software you used to create this epub is broken as it clearly uses the adobe font obfuscation algorithm but does not provide all of the information it needs. The IDPF font obfuscation algorithm will work with any dc:identifier type but the adobe one requires a UUID based identifier to meet the spec.

05-26-2020, 04:48 PM	#3
Peveks Junior Member Posts: 7 Karma: 10 Join Date: Jan 2014 Device: Kindle Paperwhite	Please accept my apologies for this mistake and thank you very much for very clear and useful explanation.