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Hi,
I'm having a similar problem with Version: 0.4.89 on windows xp (sp3). I have tried disabling realtime protection in avast but that made no difference. The gui never shows, the application just asks about a location for the library every time its run.
Looks like some issue with the sqllite db but I don't know enough about the program to debug this issue properly.
Thanks for any help you can offer.
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Debug Info is :
C:\Program Files\calibre>calibre-debug -c "from calibre.gui2.main import main; m
ain()"
Upgrading database from version: 1
Traceback (most recent call last):
File "debug.py", line 66, in <module>
File "debug.py", line 55, in main
File "<string>", line 1, in <module>
File "C:\Program Files\calibre\library.zip\calibre\gui2\main.py", line 1252, i
n main
File "C:\Program Files\calibre\library.zip\calibre\gui2\main.py", line 76, in
__init__
File "C:\Program Files\calibre\library.zip\calibre\gui2\main.py", line 1170, i
n read_settings
File "C:\Program Files\calibre\library.zip\calibre\gui2\main.py", line 1166, i
n initialize_database
File "calibre\library\database.pyo", line 801, in __init__
File "calibre\library\database.pyo", line 615, in upgrade_version1
sqlite3.OperationalError: duplicate column name: author_sort
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