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Old 12-23-2020, 06:53 AM   #1
LittleBiG
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KOreader "No reader engine" on PW1

The development builds after 2020.12 doesn't work for PW1. It restructures the cache, reload all cover thumbnails, then I get an error message "No reader engine for this file or invalid file" whichever book I want to open. The only solution is downgrade to the latest stable, however, no cover is shown after that.
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Old 12-23-2020, 07:54 AM   #2
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Try with a nightly, there was a memory alignment issue in the zstd version used in the release, that was hotfixed a few hours later. It *would* unfortunately be fatal on a Kindle, given how the alignment trap is setup there .

(I checked on a K3 a few days ago, and everything behaved as it was supposed to there).

Last edited by NiLuJe; 12-23-2020 at 07:57 AM.
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Old 12-23-2020, 09:39 AM   #3
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The problem first appeared with nightly 24, and it is the same even now with 30. I have a modern interface with no reader engine it seems.
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Old 12-23-2020, 10:29 AM   #4
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PW1 is flat, so, more on that later, but 2020.12-27 worked out just fine on a K3, and -30 just fine on a PW2.
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Old 12-23-2020, 11:27 AM   #5
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Originally Posted by NiLuJe View Post
PW1 is flat, so, more on that later, but 2020.12-27 worked out just fine on a K3, and -30 just fine on a PW2.
Thanks, I am looking forward to it. In the meantime I deleted my KOreader instance then copied the latest nightly to my reader. It was all the same :-(
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Old 12-23-2020, 11:29 AM   #6
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Well, I did find a fun Kindle special bug in the process, but everything's also fine on my end on a PW1 on 5.6.1.1 with -30.

I would have said try a clean install, but apparently you did, so, check the crash.log instead (in koreader/crash.log).
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Old 12-23-2020, 11:36 AM   #7
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12/23/20-16:32:30 INFO opening file /mnt/us/koreader/crash.log
[!] doShowReader coroutine crashed:
frontend/apps/reader/readerui.lua:226: attempt to call method 'isStub' (a nil value)
stack traceback:
frontend/ui/widget/widget.lua:48: in function 'new'
frontend/apps/reader/readerui.lua:578: in function 'doShowReader'
frontend/apps/reader/readerui.lua:536: in function <frontend/apps/reader/readerui.lua:535>12/23/20-16:32:30 INFO FM loaded plugin SSH at plugins/SSH.koplugin
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Old 12-23-2020, 11:44 AM   #8
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I'm going to need the full context, not just an excerpt.
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Old 12-23-2020, 11:53 AM   #9
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I hope it is ok for you renamed to txt and attached.
Attached Files
File Type: txt crash.txt (33.2 KB, 10 views)
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Old 12-23-2020, 12:00 PM   #10
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Which FW version is your PW1 running on?
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Old 12-23-2020, 12:03 PM   #11
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And this vaguely looks like an incomplete/badly updated install, so I'd try a *really* clean install, from scratch .
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Old 12-23-2020, 02:00 PM   #12
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Quote:
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And this vaguely looks like an incomplete/badly updated install, so I'd try a *really* clean install, from scratch .
Thank you, I have just finished and KOreader works like a charm now.
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Old 12-23-2020, 02:55 PM   #13
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Came back. Something changed in KOreader so when I run a book by kpvbooklet, I get this error message. And this was the very problem before too.
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Old 12-23-2020, 03:45 PM   #14
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Ah, now that makes more sense .

I'll try to suss out why that is, exactly.
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Old 12-23-2020, 06:45 PM   #15
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https://github.com/koreader/koreader/pull/7041
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