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Old 12-03-2021, 03:25 PM   #1
jgt1942
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Viewer window blank

On my windows 10 desktop when I attempt to open a book if the format is not PDF when the viewer window opens it remains blank. At the top of the window, I see "Loading book... --- E-book viewer (Not Responding)"

As a test, I left the window open for a few hours and nothing happened.

In another test, I installed Calibre on my laptop I opened the book successfully. Thus the issue is on my desktop.

This morning I installed Calibre 5.33 and tested it. I still have the issue.

I'm a bit gunshy about uninstalling Calibre on the desktop because I fear that I will lose all 17K+ of my books.

So far, my search for a solution has not resulted in success.

I'm open for suggestions.
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Old 12-03-2021, 04:52 PM   #2
BetterRed
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An uninstall will not effect configuration settings or libraries, but ==>> How do I backup calibre?

But why are you reading PDFs via the calibre viewer, it is inherently suboptimal for fixed layout formats?

If you uncheck PDF in Preferences->Behaviour->Use internal viewer for: the default PDF viewer will be used.

BR
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Old 12-03-2021, 06:36 PM   #3
jgt1942
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Quote:
An uninstall will not effect configuration settings or libraries, but ==>> How do I backup calibre?
Excellent, (regarding not affecting Calibre. I just uninstalled Calibre (Start > Control Panel > Programs and Features, found two instances of Calibre, I uninstalled both, reinstalled Calibre (now I only see one instance), opened Calibre, attempted to open an eBook, the viewer window opened but never displayed the book.

Good to know about the backup. I did not know that the configuration/plugins were hidden in the appdata folder. However, I think I'm safe. Nightly I backup the Calibre library folder to two different locations and retain 7 copies (e.g. 7 days, on the eighth day the first day is overwritten. Also, nightly I backup my AppData folders, which include the Calibre files that I did not know about.

Also nightly I backup my OS drive and keep 7 copies. I go for overkill when it comes to backups. In the past I have been burned going back 4 levels.

Quote:
But why are you reading PDFs via the calibre viewer, it is inherently suboptimal for fixed-layout formats?
Currently, because I cannot get the Calibre viewer to work, the window just opens and does not display anything.

Quote:
If you uncheck PDF in Preferences->Behaviour->Use internal viewer for: the default PDF viewer will be used.
I'm not sure if I changed the preferences for the PDFs but I checked and PDF is NOT checked and does open my PDF reader when I select the PDF file for a book.

I did not realize that PDF was not a good option but being a fixed format I can well understand.

If I'm using Calibre to open a book and it contains images. Can I select and copy the image and text? I just attempted one book on my laptop and only the text was in the clipboard (bummer)! If there is a way to also copy the image how do I do it?
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Old 12-03-2021, 08:37 PM   #4
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Quote:
Originally Posted by jgt1942 View Post
Excellent, (regarding not affecting Calibre. I just uninstalled Calibre (Start > Control Panel > Programs and Features, found two instances of Calibre, I uninstalled both…
I assume there was a calibre-n.n.n and a calibre-64bit-n.n.n, the first is the 32 bit version.

Quote:
Originally Posted by jgt1942 View Post
I'm not sure if I changed the preferences for the PDFs but I checked and PDF is NOT checked and does open my PDF reader when I select the PDF file for a book.
What do you mean by 'select the PDF', select it where, do you mean like this:

Click image for larger version

Name:	Screenshot 2021-12-04 111827.jpg
Views:	25
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ID:	190627

If you have unchecked PDF in the "Use calibre viewer for": list, that should open the program that is configured as the OS default handler for PDFs - e.g. Acrobat, PDF xChange, whatever.

Quote:
Originally Posted by jgt1942 View Post
If I'm using Calibre to open a book and it contains images. Can I select and copy the image and text? I just attempted one book on my laptop and only the text was in the clipboard (bummer)! If there is a way to also copy the image how do I do it?
I don't know how to copy text and images as a single unit, it may not be possible. You can copy an image by right clicking it and using the "Copy image" option (it's in the penultimate line of options).

BR
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