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Old 09-05-2012, 10:41 PM   #1
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calibre will not open

I can no longer get calibre to open for me. I was using the latest updated version (8.67). I tried to create a column built from other columns. I wanted to take a column which could only have integers and put it into a new column that was text based so that I could pick it up when making a catalog. I think I must have messed up in creating the new column because I've been getting a windows error ever since.

Is there a way to get rid of the column I just created without going into calibre itself?
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Old 09-06-2012, 12:41 AM   #2
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http://manual.calibre-ebook.com/faq....ing-on-windows
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Old 09-06-2012, 02:11 AM   #3
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I ran calibre-debug -g and got this message:

Traceback (most recent call last):
File “site-packages\calibre\gui2\main.py”, line 230, in initialize
File “site-packages\calibre\gui2\main.py”, line 211, in initialize_db
File “site-packages\calibre\gui2\main.py”, line 187, in initialize_db_stage2
File “site-packages\calibre\gui2\main.py”, line 139, in start_gui
File “site-packages\calibre\utils\config.py”, line 324, in __exit__
File “site-packages\calibre\utils\config.py”, line 314, in commit
File “site-packages\calibre\utils\config.py”, line 353, in to_raw
File “json\__init__.py”, line 238, in dumps
MemoryError
Traceback (most recent call last):
File “site-packages\calibre\gui2\ui.py”, line 488, in another_instance_wants_to_talk
File “Queue.py”, line 190, in get_nowait
MemoryError
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Old 09-06-2012, 03:12 AM   #4
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You've got something on your computer that is sending spurious messages to calibre. Try rebooting your computer.
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Old 09-06-2012, 04:16 AM   #5
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I had just restarted before I got that message. I tried again, this time shutting it down and then manually restarting.

I got this message for the second Traceback:

MemoryError
Traceback (most recent call last):
File “site-packages\calibre\gui2\ui.py”, line 420, in add_spare_server
File “site-packages\calibre\utils\ipc\server.py”, line 91, in __init__
MemoryError

However, when I repeated my actions of manual restart, it went back to:

File “site-packages\calibre\gui2\ui.py”, line 488, in another_instance_wants_to_talk
File “Queue.py”, line 190, in get_nowait


I recently installed a game that installed some direct x components. Could either of those be causing me problems? If so, what can I do?
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Old 09-06-2012, 04:23 AM   #6
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A memoryError indicates calibre is running out of RAM. How much RAM do you have in your computer?
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Old 09-06-2012, 04:41 AM   #7
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According to the system section, I have 10.0 GB (9.78 GB usable) RAM. I bought the computer a few months ago and specified that it had to be able to play a high graphic game.

My library is pretty big. Could it be trying to populate that column from other columns that I created and running out of memory that way? Or because I went from an integer column to a text column?
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Old 09-06-2012, 05:13 AM   #8
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Could be. simple way to test is to rename the metadata.db file. If calibre opens without it, then you know it is the problem.
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Old 09-06-2012, 04:36 PM   #9
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Renaming the metadata.db worked and I was able to open calibre. Is there a way for me to remove that column so that I can access my library or do I need to create a new library?
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Old 09-07-2012, 12:09 AM   #10
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You can try running a library restore which will regenerate the db from backups and see if that fixes it, otherwise you will have to generate a new library.
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