Report conversion error or not?

MaxIsAvailable · 03-21-2026, 05:05 AM

I am new to this forum, so please be gentle with me.

I have a couple of epub files which I converted to AZW3 a few days ago using Calypso (v9.5).
When I loaded them onto my Kindle (v5.19.2) and opened them, they both raised a text box containing An error occurred (followed by a smug Amazon suggestion which is no help at all). As a baseline, I tried a third file - converted, loaded and opened in the same way, it worked with no problem.

Initially, I intended to report a conversion failure in relation to the first two files. But then I learned that Kindle users were reporting problems with the v5.19.2 firmware, and it occurred to me that it may be a better choice to wait a while to see if some of these issues are resolved. Which in turn may make my error message go away.

Could I have some advice please.

JSWolf · 03-21-2026, 06:19 AM

Quote:

Originally Posted by MaxIsAvailable

I am new to this forum, so please be gentle with me.

I have a couple of epub files which I converted to AZW3 a few days ago using Calypso (v9.5).
When I loaded them onto my Kindle (v5.19.2) and opened them, they both raised a text box containing An error occurred (followed by a smug Amazon suggestion which is no help at all). As a baseline, I tried a third file - converted, loaded and opened in the same way, it worked with no problem.

Initially, I intended to report a conversion failure in relation to the first two files. But then I learned that Kindle users were reporting problems with the v5.19.2 firmware, and it occurred to me that it may be a better choice to wait a while to see if some of these issues are resolved. Which in turn may make my error message go away.

Could I have some advice please.

I have no idea what Calypso is. But you are best to use calibre 9 to convert to KF8 for your Kindle.

DNSB · 03-21-2026, 12:53 PM

I would suspect that Calypso 9.5 is an autocorrect of calibre 9.5 though I might be wrong.

And yes, there have been issues reported with sideloaded files and Kindles. I don't know if they are going to go away since Amazon seems to have little interest in the problem going by their "tech support" responses.

JSWolf · 03-21-2026, 02:36 PM

Quote:

Originally Posted by DNSB

I would suspect that Calypso 9.5 is an autocorrect of calibre 9.5 though I might be wrong.

And yes, there have been issues reported with sideloaded files and Kindles. I don't know if they are going to go away since Amazon seems to have little interest in the problem going by their "tech support" responses.

If it is an autocorrect, it's a very odd autocorrect.

pdurrant · 03-21-2026, 03:12 PM

I would recommend just sending the ePub to your Amazon account using Amazon's Send to Kindle service.

It would probably be helpful to report the error, using a scrambled version of the ePub.

JSWolf · 03-21-2026, 05:53 PM

Does the ePub pass epubcheck?

MaxIsAvailable · 03-21-2026, 08:01 PM

Quote:

Originally Posted by JSWolf

I have no idea what Calypso is. But you are best to use calibre 9 to convert to KF8 for your Kindle.

Did I really do that - I meant Calibre

kovidgoyal · 03-21-2026, 10:18 PM

The simplest fix is to simpy convert to MOBI instead of azw3, that typically dumbs down the markup enough for amazons renderer to handle.

MaxIsAvailable · Yesterday, 07:01 PM

Thanks for all the responses - i have now tried out epubcheck and the internal error check in Calibre and while some errors were corrected, the final AZW3 is still faulty. But i have learned a lot about Calibre along the way. Thx for the tip about MOBI. I will try it out.

MaxIsAvailable · Yesterday, 07:27 PM

My final post on this thread - 2 questions:
Q1: do i have the responsibility or the ability to close or delete this thread
Q2: Is there a facility to send the contents of a thread to my email address

theducks · Yesterday, 07:49 PM

1) MR normally does not close valid (not spam or in violation of guidelines) threads.
Moderators (see list at bottom of the main forum level) can move , in case you posted wrong place (or delete if really necessary). Just PM one of them . Some of us are more active than others

You really don't want the other way to get deleted (that is a COMPLETE delete = 'banned' )
Your Thanks for a SOLVED issue (which you did), gives a clue

2) A good question that I have no clue. For this at least a Greenie level mod might have the answer

MaxIsAvailable · Yesterday, 08:45 PM

I just found the answer to my question about capturing the content of a thread - it's in the drop-down menu under Thread Tools.

BetterRed · Yesterday, 09:14 PM

Q2 - most browsers provide the wherewithal to email a link to current page. I say 'most' because current Edge only provides that facility if it's the default browser -

BR

BetterRed · Yesterday, 09:22 PM

Quote:

Originally Posted by MaxIsAvailable

I just found the answer to my question about capturing the content of a thread - it's in the drop-down menu under Thread Tools.

I think you'll find that sends a link, not the content.

BR

MaxIsAvailable · Today, 04:39 AM

Thx for the suggestion to use MOBI type - it works fine

03-21-2026, 05:05 AM	#1
MaxIsAvailable Junior Member Posts: 6 Karma: 10 Join Date: Mar 2026 Device: Kindle (11th generation, 2024 release)	Report conversion error or not? I am new to this forum, so please be gentle with me. I have a couple of epub files which I converted to AZW3 a few days ago using Calypso (v9.5). When I loaded them onto my Kindle (v5.19.2) and opened them, they both raised a text box containing An error occurred (followed by a smug Amazon suggestion which is no help at all). As a baseline, I tried a third file - converted, loaded and opened in the same way, it worked with no problem. Initially, I intended to report a conversion failure in relation to the first two files. But then I learned that Kindle users were reporting problems with the v5.19.2 firmware, and it occurred to me that it may be a better choice to wait a while to see if some of these issues are resolved. Which in turn may make my error message go away. Could I have some advice please.

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03-21-2026, 12:53 PM	#3
DNSB Bibliophagist Posts: 50,800 Karma: 178402710 Join Date: Jul 2010 Location: Vancouver Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos	I would suspect that Calypso 9.5 is an autocorrect of calibre 9.5 though I might be wrong. And yes, there have been issues reported with sideloaded files and Kindles. I don't know if they are going to go away since Amazon seems to have little interest in the problem going by their "tech support" responses.

03-21-2026, 03:12 PM	#5
pdurrant The Grand Mouse 高貴的老鼠 Posts: 75,138 Karma: 319569784 Join Date: Jul 2007 Location: Norfolk, England Device: Kindle Oasis	I would recommend just sending the ePub to your Amazon account using Amazon's Send to Kindle service. It would probably be helpful to report the error, using a scrambled version of the ePub.

03-21-2026, 05:53 PM	#6
JSWolf Resident Curmudgeon Posts: 82,521 Karma: 151278869 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3	Does the ePub pass epubcheck?

03-21-2026, 10:18 PM	#8
kovidgoyal creator of calibre Posts: 46,116 Karma: 29626208 Join Date: Oct 2006 Location: Mumbai, India Device: Various	The simplest fix is to simpy convert to MOBI instead of azw3, that typically dumbs down the markup enough for amazons renderer to handle.

Yesterday, 07:01 PM	#9
MaxIsAvailable Junior Member Posts: 6 Karma: 10 Join Date: Mar 2026 Device: Kindle (11th generation, 2024 release)	Thanks for all the responses - i have now tried out epubcheck and the internal error check in Calibre and while some errors were corrected, the final AZW3 is still faulty. But i have learned a lot about Calibre along the way. Thx for the tip about MOBI. I will try it out.

Yesterday, 07:27 PM	#10
MaxIsAvailable Junior Member Posts: 6 Karma: 10 Join Date: Mar 2026 Device: Kindle (11th generation, 2024 release)	My final post on this thread - 2 questions: Q1: do i have the responsibility or the ability to close or delete this thread Q2: Is there a facility to send the contents of a thread to my email address

Yesterday, 07:49 PM	#11
theducks Well trained by Cats Posts: 31,608 Karma: 64144480 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	1) MR normally does not close valid (not spam or in violation of guidelines) threads. Moderators (see list at bottom of the main forum level) can move , in case you posted wrong place (or delete if really necessary). Just PM one of them . Some of us are more active than others You really don't want the other way to get deleted (that is a COMPLETE delete = 'banned' ) Your Thanks for a SOLVED issue (which you did), gives a clue 2) A good question that I have no clue. For this at least a Greenie level mod might have the answer

Yesterday, 08:45 PM	#12
MaxIsAvailable Junior Member Posts: 6 Karma: 10 Join Date: Mar 2026 Device: Kindle (11th generation, 2024 release)	I just found the answer to my question about capturing the content of a thread - it's in the drop-down menu under Thread Tools.

Yesterday, 09:14 PM	#13
BetterRed null operator (he/him) Posts: 22,501 Karma: 32600658 Join Date: Mar 2012 Location: Sydney Australia Device: none	Q2 - most browsers provide the wherewithal to email a link to current page. I say 'most' because current Edge only provides that facility if it's the default browser - BR

Today, 04:39 AM	#15
MaxIsAvailable Junior Member Posts: 6 Karma: 10 Join Date: Mar 2026 Device: Kindle (11th generation, 2024 release)	Thx for the suggestion to use MOBI type - it works fine

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