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Old 07-22-2014, 09:07 AM   #1
lordofazeroth
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Gen3 does not open some epub files

I got a problem with some of my epubs on my Gen3 device.
Some epubs are simply not opening. The cover picture is shown but when opening the book the Gen3 reboots.

The same book on my Kobo mini works fine.
EPub is 3.2 Mb in size and about 200 pages.

Any idea why it is not loading?
converting from epub to epub in calibre does not work either.
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Old 02-10-2015, 03:40 PM   #2
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Still having this problem.
On one epub book I simply select it to open and the device restarts.
How can I find out whats causing the trouble?
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Old 02-10-2015, 04:13 PM   #3
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You can try sigil for that. (ePub check).
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Old 02-10-2015, 04:33 PM   #4
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Is that a calibre plugin or a standalone software?
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Old 02-10-2015, 04:48 PM   #5
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Quote:
Originally Posted by lordofazeroth View Post
Is that a calibre plugin or a standalone software?
Sigil is a separate program...
http://sigil-ebook.com/
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Old 02-11-2015, 06:14 PM   #6
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3,2 M for 200 pages isn't normal...
I think you must "validate" your epub or installing sigil as suggested or using standalone tools like this:

http://validator.idpf.org/

thas is the "official" validator of idpf ( but has some issues ) and this:

https://code.google.com/p/epubcheck/

I prefer to use epubchecker that is the program embedded in sigil...

As you have validate your epub, you'll be able to see the cause of.

HP
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Old 02-21-2015, 08:45 AM   #7
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When my Gen3 crashed on some epub ebooks, the cause were always some too large pictures. Try to look with Sigil and if the book contains pictures larger than 1024x800, try to scale them to 800x600 (for example with a graphics software like IrfanView). But the problem were not the dimensions, but the file size of the pictures. Maybe someone knows the critical size, I do not remember.

Last edited by Flinx; 02-27-2015 at 08:18 AM.
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Old 02-23-2015, 06:22 PM   #8
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Quote:
Originally Posted by Flinx View Post
When my Gen3 crashed on some epup ebooks, the cause were always some too large pictures. Try to look with Sigil and if the book contains pictures larger than 1024x800, try to scale them to 800x600 (for example with a graphics software like IrfanView). But the problem were not the dimensions, but the file size of the pictures. Maybe someone knows the critical size, I do not remember.
Weirdly, I am still using mobi on my Gen 3..and never had an issue..
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Old 02-23-2015, 06:41 PM   #9
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Quote:
Originally Posted by lordofazeroth View Post
Is that a calibre plugin or a standalone software?
You could use the eBook Editor built into Calibre and from there validate the eBooks to see what's wrong with it.
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Old 02-23-2015, 06:43 PM   #10
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Quote:
Originally Posted by hubertphava View Post
3,2 M for 200 pages isn't normal...
I think you must "validate" your epub or installing sigil as suggested or using standalone tools like this:
Actually, it's not unusual. Large images and/or embedded fonts can make an ePub be that large. It's not unusual at all,
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Old 02-27-2015, 08:21 AM   #11
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Quote:
Originally Posted by hermano View Post
Weirdly, I am still using mobi on my Gen 3..and never had an issue..
It were not much books, two or three of many I did read with the Gen 3, but it may be worth the check. And I did have this type of crash only with epub, not with mobi.
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