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Old 04-22-2010, 12:10 AM   #1
Beau
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Error trying to do epub conversion after most recent update

I just updated to 0.6.48. My library seems to be all there, I can open and read books.

After adding some books, I attempt to convert to epub and get this message:

ERROR: ERROR: Unhandled exception: <b>DatabaseException</b>:database disk image is malformed
RemoteTraceback (most recent call last):
File "site-packages\calibre\library\sqlite.py", line 127, in run
File "site-packages\calibre\library\sqlite.py", line 76, in get
DatabaseError: database disk image is malformed

Traceback (most recent call last):
File "site-packages\calibre\gui2\tools.py", line 141, in do_book
File "site-packages\calibre\gui2\convert\single.py", line 95, in get_input_format_for_book
File "site-packages\calibre\gui2\convert\single.py", line 73, in get_preferred_input_format_for_book
File "site-packages\calibre\ebooks\conversion\config.py", line 48, in load_specifics
File "site-packages\calibre\library\database.py", line 1075, in conversion_options
File "site-packages\calibre\library\sqlite.py", line 163, in run
DatabaseException: database disk image is malformed
RemoteTraceback (most recent call last):
File "site-packages\calibre\library\sqlite.py", line 127, in run
File "site-packages\calibre\library\sqlite.py", line 76, in get
DatabaseError: database disk image is malformed

You may remember me from before with some other error, but since then I've restored and reformated my comp. I'm running Vista.Any ideas?

Thanks!
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Old 04-22-2010, 04:39 AM   #2
kovidgoyal
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The line

DatabaseError: database disk image is malformed

means that the metadata database calibre uses is corrupted. I would suggest waiting till the next release (the current one has a bug) and then going to Preferences->advanced->check database integrity
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Old 04-22-2010, 12:03 PM   #3
Beau
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OK, I can do that. Thank you very much!

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Old 04-24-2010, 01:48 AM   #4
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I've don the update. Attempting to run check I get the following error:

ERROR: Error: Failed to check database integrity

Traceback (most recent call last):
File "site-packages\calibre\gui2\dialogs\config\__init__.py", line 786, in run
File "site-packages\calibre\library\database2.py", line 1399, in check_integrity
File "site-packages\calibre\library\sqlite.py", line 163, in run
DatabaseException: database disk image is malformed
RemoteTraceback (most recent call last):
File "site-packages\calibre\library\sqlite.py", line 119, in run
File "sqlite3\dump.py", line 49, in _iterdump
DatabaseError: database disk image is malformed

Any other thoughts? Is it possible to salvage this mess?

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Old 04-24-2010, 06:23 AM   #5
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Do the following:

1) Select all books (press Ctrl+A)
2) Save to disk in some separate directory
3) shutdown calibre
4) look at the saved to disk books to make sure that they are there with a .opf file
5) delete the contents calibre library folder
6) restart calibre
7) You should get a new empty library
8) make sure this library works (that is add a single book and try converting it)
9) if it work click the arrow next to the add books button and select add books from sub directories (single book per folder) and then choose the folder where you previously saved your books. That should recreate your library with all metadata intact.

Alternatively if you've been backing up your calibre library just restore one of the backups from before the problem appeared,
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Old 04-24-2010, 07:54 AM   #6
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If you have the disk space I would recommend that for Step 5) you simply rename the Calibre Library folder as at that point everything you currently have is still intact.

After you have completed the rest of the process Kovid outlined and everything is OK you can then delete the renamed folder to free up the space.
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Old 04-24-2010, 10:56 AM   #7
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We'll do. I had already started to try to save to disk. Parallels keeps crashing while I do it, but it seems to continue on. I'm certain the error is in the database somewhere as it is not functioning on the synced computer either.

Thanks again for all of the help!
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