09-08-2020, 02:42 AM | #1 |
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Calibre ebook viewer won't open on Win 10
I've used Calibre for many years. But now the ebook viewer simply won't open. There are no errors displayed. Calibre seems to work fine otherwise (except edit book). I'm using Calibre 4.23 and Windows 10.
If I try to open an epub via Windows Explorer or try to run ebook-viewer.exe directly, I can see the process appear for about one second in the task manager, then disappear, but no window ever opens. If I try to open an epub from Calibre I can see the same thing happen with the calibre-parallel.exe process. I recently had to update my display drivers, which makes me suspect it has something to do with this issue, but I don't understand the instructions that kovidgoyal linked to. |
09-15-2020, 05:24 AM | #2 |
The Grand Mouse 高貴的老鼠
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Any ideas, anyone?
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09-15-2020, 07:06 AM | #3 |
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09-15-2020, 07:28 AM | #4 |
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the OP might try deleting the settings/history file from the configuration folder
BUT 2 different parts failing leads me to believe there is issues creating scratch (temp) files. (both editor and viewer use these) Security software is the common culprit |
09-15-2020, 08:09 AM | #5 | |
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Thanks for your suggestions.
Quote:
Which files in particular should I be deleting? |
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09-15-2020, 08:48 AM | #6 |
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Open a command prompt run
calibre-debug -w and post any output you see in the command prompt. |
09-15-2020, 11:10 AM | #7 | |
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Quote:
Do provide the debug log (please wrap in [spoiler] tags when posting ) |
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09-15-2020, 11:13 AM | #8 |
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One other thing to try is to uninstall Calibre and reinstall. Also, rename your Calibre configuration directory to Calibre.bak and also make a copy of it.
The configuration directory is in %appdata% and the directory is Calibre. |
09-15-2020, 09:37 PM | #9 |
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Here's the output from the debugger:
Spoiler:
I'll try this next. |
09-15-2020, 09:48 PM | #10 |
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Weird debug listing
the Application folder name is: C:\Program Files\Calibre2 |
09-15-2020, 10:21 PM | #11 | |
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Quote:
Do you think that's what the problem is? Is there a way to uninstall and reinstall without losing settings, etc? I just found the answer myself here. Last edited by timnz; 09-15-2020 at 10:26 PM. |
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09-15-2020, 11:27 PM | #12 |
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I just uninstalled and reinstalled and it's fixed. It's been installed into the normal Calibre2 folder now too.
I have no idea how I ended up installing it to a different folder, nor why it only recently caused a problem after all these years. Anyway, thanks a lot everyone for your help. |
09-16-2020, 10:23 AM | #13 |
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Wow! AFAIK the folder has been calibre2 for a Decade
Do you use the Advanced/custom mode of the installer (allows override of location or shortcuts)? (There might be a really stale hint in that. I will try that, the next update) |
09-16-2020, 03:28 PM | #14 | |
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Quote:
But anyway, glad Calibre is working once again. I know I'd be lost without it. |
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09-16-2020, 05:22 PM | #15 | |
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Quote:
Hardly the sort of thing one would do inadvertently. But if you do, the library manager and its viewer still seem to work from C:\Program Files (X86)\Calibre\. So, something deeper went awry - maybe something to do with the Path environment variable, maybe it had Calibre2 in it - I hate that thing BR |
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