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Old 09-29-2020, 04:17 PM   #1
nightmoves42
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Can’t turn book pages
I just upgraded my server from 4 to 5 the other day. Now I can’t turn any of my book pages. They all get stuck at chapter 1 and won’t go any farther. How do I downgrade my server?
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Old 10-06-2020, 04:48 PM   #2
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I have exact same issue.
I can browse and open a book, but I cannot turn the page after first couple pages.
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Old 10-06-2020, 08:01 PM   #3
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First of all: 'More Input' (Johnny 5)
Are we talking about reading a book via your Browser?
What Browser?
What OS?

What happens if you tap the spacebar?
Do the arrow heads show when you hover near the edge?
Can you go back pages.
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Old 10-06-2020, 08:37 PM   #4
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Quote:
Originally Posted by nightmoves42 View Post
I just upgraded my server from 4 to 5 the other day. Now I can’t turn any of my book pages. They all get stuck at chapter 1 and won’t go any farther. How do I downgrade my server?
Uninstall calibre 5, install calibre 4.23. This should leave your libraries and setup intact.
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Old 10-06-2020, 10:28 PM   #5
kovidgoyal
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Turning pages works fine for me, I will need a book demonstrating the problem.
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Old 10-07-2020, 04:27 PM   #6
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There was a recent discussion of using negative margins to get more use of screen real estate on Kindles. When trying that I modified a public domain EPUB to use negative margins and found that in the calibre viewer it does not let me switch pages when an HTML file boundary is reached.

Also, if I jump ahead using the scroll bar and then page backward to a chapter boundary I receive the following error:

Quote:
calibre, version 5.2.0
ERROR: Unhandled error: Uncaught TypeError: Cannot read property 'cols_left' of null
Error at userscript:viewer.js:21946:41

Traceback (most recent call last):
at ScrollResizeBugWatcher.check_for_resize_bug (userscript:viewer.js:21724:29)
at ScrollResizeBugWatcher.redo_scroll (userscript:viewer.js:21739:22)
at ScrollResizeBugWatcher.scroll_to_previous_position [as last_command] (userscript:viewer.js:21946:41)
TypeError: Cannot read property 'cols_left' of null
This is calibre 5.2.0 64-bit under Windows 10.

This might be a different problem from the OP. If so I apologize for derailing.
Attached Files
File Type: epub Shelley-Frankenstein-en-negative-margin.epub (322.7 KB, 251 views)
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Old 10-07-2020, 09:54 PM   #7
kovidgoyal
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@jhowell: This should take care of it: https://github.com/kovidgoyal/calibr...6a986ffa8d437a
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Old 10-08-2020, 03:48 AM   #8
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Quote:
Originally Posted by kovidgoyal View Post
@jhowell: This should take care of it: https://github.com/kovidgoyal/calibr...6a986ffa8d437a
That fixed it. Thanks!
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