ADE refusing epub

exaltedwombat · 12-23-2015, 12:58 PM

Since (but not necessarily because of) updating to Sigil 0.9.2 and ADE 4.5, I'm getting regular "Unable to open <title>. Errors were encountered in this item." when attempting to open an epub file in ADE. The epub has typically been converted from PDF or DOCX in Calibre then brought into Sigil for editing. It will have passed both the FlightCrew and EpubCheck plugins in Sigil. Cover pages and their picture files have been given semantics tags.

Any ideas?

I have a theory that ADE doesn't like the mix of Calibre's HTML file extensions and Sigil's XHTML ones. But I can't quite see a repeatable pattern...

Thanks all. Merry Christmas!

DiapDealer · 12-23-2015, 01:06 PM

Do me a favor and open the epubs in question with some sort of zip archiving software. I don't mean you have to unzip it, just explore its contents with something like 7-Zip or the like. Focus especially filenames and any potential exact duplicates. Let me know what you find.

I ask because I've had similar issues opening validated epubs in a reading app (which is Adobe RMSDK-based). I've not been able to link it to Sigil specifically, but I've not been able to rule it out either.

exaltedwombat · 12-23-2015, 01:59 PM

Thanks for your interest.

Unzipped, it looks normal. It re-loads into Sigil OK. It reads OK in Aldiko on my Nexus 9. It reads OK in Calibre.
But ADE doesn't like it. Sometimes. Then I mess with it again in Sigil, and ADE accepts it. But I can't see any pattern to WHAT edits make a difference!

I wouldn't worry. But customers check my work in ADE (and Kindle Reader) on their computers. Realistically, I have to optimize for those readers.

DiapDealer · 12-23-2015, 02:45 PM

Quote:

Originally Posted by exaltedwombat

Unzipped, it looks normal. It re-loads into Sigil OK. It reads OK in Aldiko on my Nexus 9. It reads OK in Calibre.
But ADE doesn't like it. Sometimes. Then I mess with it again in Sigil, and ADE accepts it. But I can't see any pattern to WHAT edits make a difference!

Again ... please try to explore the archive with zip software, but don't actually unzip it. The problem epubs I've run into behave exactly the same way you're describing: opens in Sigil/calibre fine, and validates fine--even looks fine after unzipping, but ADE/RMSDK-based readers/apps choke on them.

In all cases, I've narrowed it down to zip archives that THINK they have two duplicate mimetype files. But the duplicate is only apparent when browsing the still zipped archive. The dual-mimetype situation doesn't survive unzipping.

"unzip -l book.epub" will list the duplicate mimetype on Linux (and similar), as will as will 7Zip's "Open Archive."

In my problem epubs, one will be compressed (Deflate) and one will be uncompressed (Store). 7Zip indicates that the Host OS on the proper one (uncompressed) is FAT and the wonky one is NTFS.

One of my pet theories is the fact that many of them are being edited while being synchronized (via DropBox) to two different machines/OSs, but I can't prove any of it. But now I know what to look for when ADE kicks up it heels at otherwise validating epubs.

Just curious if your situation is something similar.

theducks · 12-23-2015, 03:21 PM

Oversize (HxV) images will abend my old RMSDK reader.

The book validates perfectly
HTML segment well under 260K
CSS validates (with common complaints that do NOT cause issues)

RMSDK is just fussy , which is why we recommend using it to verify your book works in the real world

rubeus · 12-23-2015, 04:10 PM

Well i have a Sony PRS650 and it accepts images having 2500x1800 in size.

theducks · 12-23-2015, 05:14 PM

Quote:

Originally Posted by rubeus

Well i have a Sony PRS650 and it accepts images having 2500x1800 in size.

the 650 is NEW device

RbnJrg · 12-23-2015, 05:21 PM

Could you upload here that epub? Use the Jackie's utility to scramble its content.

https://www.mobileread.com/forums/sho...d.php?t=266377

rubeus · 12-23-2015, 05:29 PM

Quote:

Originally Posted by theducks

the 650 is NEW device

A 5 year old device isnt new

JSWolf · 12-23-2015, 05:43 PM

Quote:

Originally Posted by theducks

the 650 is NEW device

It was released in September 2010. It's hardly new. It has the first version RMDSK that supports full justification. But it's too old to support hyphens.

But if you want a 1.7.2 level RMDSK, get a 505.

JSWolf · 12-23-2015, 05:45 PM

Quote:

Originally Posted by rubeus

A 5 year old device isnt new

But it is newer (with a newer RMDSK) than a lot of older devices still in use like the 505.

But the problem is that a device like the 505 might not handle images needed to be large for newer devices such as the H2O, Glo HD, PW3, & Voyage.

DiapDealer · 12-23-2015, 07:07 PM

Stop it.

DiapDealer · 12-23-2015, 07:54 PM

Quote:

Originally Posted by RbnJrg

Could you upload here that epub? Use the Jackie's utility to scramble its content.

https://www.mobileread.com/forums/sho...d.php?t=266377

I have one I can probably try that out on. I'll make sure the scrambling doesn't somehow "fix" the double mimetype, of course.

Divingduck · 12-24-2015, 06:55 AM

@exaltedwombat
If there are two versions of the same book and one of it is working, the tool compare ebooks from calibre was very helpful for me to find differences in the code. Maybe it is helpful for you too.

exaltedwombat · 12-24-2015, 01:15 PM

The really strange thing is that the problem comes and goes with the SAME epub, after doing text editing that shouldn't affect the file structure at all.
This will have to wait until my next editing session, when I'll try to pin one down while in a non-opening-in-ADE mood.

12-23-2015, 12:58 PM	#1
exaltedwombat Guru Posts: 878 Karma: 2457540 Join Date: Nov 2011 Device: none	ADE refusing epub Since (but not necessarily because of) updating to Sigil 0.9.2 and ADE 4.5, I'm getting regular "Unable to open <title>. Errors were encountered in this item." when attempting to open an epub file in ADE. The epub has typically been converted from PDF or DOCX in Calibre then brought into Sigil for editing. It will have passed both the FlightCrew and EpubCheck plugins in Sigil. Cover pages and their picture files have been given semantics tags. Any ideas? I have a theory that ADE doesn't like the mix of Calibre's HTML file extensions and Sigil's XHTML ones. But I can't quite see a repeatable pattern... Thanks all. Merry Christmas! Last edited by exaltedwombat; 12-23-2015 at 01:04 PM.

12-23-2015, 01:06 PM	#2
DiapDealer Grand Sorcerer Posts: 28,363 Karma: 203720150 Join Date: Jan 2010 Device: Nexus 7, Kindle Fire HD	Do me a favor and open the epubs in question with some sort of zip archiving software. I don't mean you have to unzip it, just explore its contents with something like 7-Zip or the like. Focus especially filenames and any potential exact duplicates. Let me know what you find. I ask because I've had similar issues opening validated epubs in a reading app (which is Adobe RMSDK-based). I've not been able to link it to Sigil specifically, but I've not been able to rule it out either. Last edited by DiapDealer; 12-23-2015 at 01:12 PM.

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12-23-2015, 01:59 PM	#3
exaltedwombat Guru Posts: 878 Karma: 2457540 Join Date: Nov 2011 Device: none	Thanks for your interest. Unzipped, it looks normal. It re-loads into Sigil OK. It reads OK in Aldiko on my Nexus 9. It reads OK in Calibre. But ADE doesn't like it. Sometimes. Then I mess with it again in Sigil, and ADE accepts it. But I can't see any pattern to WHAT edits make a difference! I wouldn't worry. But customers check my work in ADE (and Kindle Reader) on their computers. Realistically, I have to optimize for those readers.

12-23-2015, 03:21 PM	#5
theducks Well trained by Cats Posts: 30,912 Karma: 60358908 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	Oversize (HxV) images will abend my old RMSDK reader. The book validates perfectly HTML segment well under 260K CSS validates (with common complaints that do NOT cause issues) RMSDK is just fussy , which is why we recommend using it to verify your book works in the real world

12-23-2015, 04:10 PM	#6
rubeus Banned Posts: 272 Karma: 1224588 Join Date: Sep 2014 Device: Sony PRS 650	Well i have a Sony PRS650 and it accepts images having 2500x1800 in size.

12-23-2015, 05:21 PM	#8
RbnJrg Wizard Posts: 1,641 Karma: 8566337 Join Date: Mar 2013 Location: Rosario - Santa Fe - Argentina Device: Kindle 4 NT	Could you upload here that epub? Use the Jackie's utility to scramble its content. https://www.mobileread.com/forums/sho...d.php?t=266377

12-23-2015, 07:07 PM	#12
DiapDealer Grand Sorcerer Posts: 28,363 Karma: 203720150 Join Date: Jan 2010 Device: Nexus 7, Kindle Fire HD	Stop it.

12-24-2015, 06:55 AM	#14
Divingduck Wizard Posts: 1,166 Karma: 1410083 Join Date: Nov 2010 Location: Germany Device: Sony PRS-650	@exaltedwombat If there are two versions of the same book and one of it is working, the tool compare ebooks from calibre was very helpful for me to find differences in the code. Maybe it is helpful for you too.

12-24-2015, 01:15 PM	#15
exaltedwombat Guru Posts: 878 Karma: 2457540 Join Date: Nov 2011 Device: none	The really strange thing is that the problem comes and goes with the SAME epub, after doing text editing that shouldn't affect the file structure at all. This will have to wait until my next editing session, when I'll try to pin one down while in a non-opening-in-ADE mood.