This happened to me as well... I have a suspicion as to what may have caused it: I think I may have had Calibre open when I disconnected my Kindle and forgot to formally "eject" it. Evidently, the "bad things" have happened....
Here is my debug response:
calibre Debug log
calibre 0.8.48
Windows-XP-5.1.2600-SP3
Windows
('Windows', 'XP', '5.1.2600')
Python 2.7.1
Windows: ('XP', '5.1.2600', 'SP3', 'Multiprocessor Free')
Starting up...
Started up in 7.05 seconds with 87 books
Locating zip file for Kindle Collections:
https://www.mobileread.com/forums/sho...d.php?t=118635
Downloading plugin zip attachment:
https://www.mobileread.com/forums/att...9&d=1322064138
Installing plugin: C:\DOCUME~1\Peg\LOCALS~1\Temp\calibre_0.8.48_tmp_n glswt\92nzqp.zip
Restarting with: C:\Program Files\Calibre2\calibre-debug.exe ['calibre-debug.exe', u'--gui-debug', u'c:\\docume~1\\peg\\locals~1\\temp\\tmpgcalibre Debug log
calibre 0.8.48
Windows-XP-5.1.2600-SP3
Windows
('Windows', 'XP', '5.1.2600')
Python 2.7.1
Windows: ('XP', '5.1.2600', 'SP3', 'Multiprocessor Free')
Starting up...
Started up in 6.78 seconds with 87 books
2012/04/22 20:23:59 BEGIN Configuration loading config store
2012/04/22 20:23:59 BEGIN Initialize CalibreInfo
2012/04/22 20:23:59 BEGIN Library uuid
2012/04/22 20:23:59 END Library uuid: daf97420-b6d6-4d3b-8e33-772294d6db5d
2012/04/22 20:23:59 BEGIN Device uuid
2012/04/22 20:23:59 END Device uuid:
2012/04/22 20:23:59 BEGIN Get Device Path
2012/04/22 20:23:59 A device appears to be connected, but device path not defined
2012/04/22 20:23:59 END Get Device Path
2012/04/22 20:23:59 BEGIN Calibre get_columns
2012/04/22 20:23:59 Including Calibre column label "authors", name "Authors"
2012/04/22 20:23:59 Including Calibre column label "publisher", name "Publishers"
2012/04/22 20:23:59 Including Calibre column label "series", name "Series"
2012/04/22 20:23:59 Including Calibre column label "tags", name "Tags"
2012/04/22 20:23:59 Including Calibre column label "author_sort", name "Author Sort"
2012/04/22 20:23:59 Including Calibre column label "title", name "Title"
2012/04/22 20:23:59 Including Calibre column label "timestamp", name "Date"
2012/04/22 20:23:59 END Calibre get_columns
2012/04/22 20:23:59 END Initialize CalibreInfo
2012/04/22 20:23:59 Kindle not detected.
2012/04/22 20:23:59 This plugin requires a Kindle to be connected so that the plugin can read existing collection information and the data Calibre stored on the Kindle.
2012/04/22 20:23:59 END Configuration loading config store
2012/04/22 20:24:42 BEGIN Configuration loading config store
2012/04/22 20:24:42 BEGIN Initialize CalibreInfo
2012/04/22 20:24:42 BEGIN Library uuid
2012/04/22 20:24:42 END Library uuid: daf97420-b6d6-4d3b-8e33-772294d6db5d
2012/04/22 20:24:42 BEGIN Device uuid
2012/04/22 20:24:42 END Device uuid:
2012/04/22 20:24:42 BEGIN Get Device Path
2012/04/22 20:24:42 A device appears to be connected, but device path not defined
2012/04/22 20:24:42 END Get Device Path
2012/04/22 20:24:42 BEGIN Calibre get_columns
2012/04/22 20:24:42 Including Calibre column label "authors", name "Authors"
2012/04/22 20:24:42 Including Calibre column label "publisher", name "Publishers"
2012/04/22 20:24:42 Including Calibre column label "series", name "Series"
2012/04/22 20:24:42 Including Calibre column label "tags", name "Tags"
2012/04/22 20:24:42 Including Calibre column label "author_sort", name "Author Sort"
2012/04/22 20:24:42 Including Calibre column label "title", name "Title"
2012/04/22 20:24:42 Including Calibre column label "timestamp", name "Date"
2012/04/22 20:24:42 END Calibre get_columns
2012/04/22 20:24:42 END Initialize CalibreInfo
2012/04/22 20:24:42 Kindle not detected.
2012/04/22 20:24:42 This plugin requires a Kindle to be connected so that the plugin can read existing collection information and the data Calibre stored on the Kindle.
2012/04/22 20:24:42 END Configuration loading config store
2012/04/22 20:33:46 BEGIN Configuration loading config store
2012/04/22 20:33:46 BEGIN Initialize CalibreInfo
2012/04/22 20:33:46 BEGIN Library uuid
2012/04/22 20:33:46 END Library uuid: daf97420-b6d6-4d3b-8e33-772294d6db5d
2012/04/22 20:33:46 BEGIN Device uuid
2012/04/22 20:33:46 END Device uuid:
2012/04/22 20:33:46 BEGIN Get Device Path
2012/04/22 20:33:46 A device appears to be connected, but device path not defined
2012/04/22 20:33:46 END Get Device Path
2012/04/22 20:33:46 BEGIN Calibre get_columns
2012/04/22 20:33:46 Including Calibre column label "authors", name "Authors"
2012/04/22 20:33:46 Including Calibre column label "publisher", name "Publishers"
2012/04/22 20:33:46 Including Calibre column label "series", name "Series"
2012/04/22 20:33:46 Including Calibre column label "tags", name "Tags"
2012/04/22 20:33:46 Including Calibre column label "author_sort", name "Author Sort"
2012/04/22 20:33:46 Including Calibre column label "title", name "Title"
2012/04/22 20:33:46 Including Calibre column label "timestamp", name "Date"
2012/04/22 20:33:46 END Calibre get_columns
2012/04/22 20:33:46 END Initialize CalibreInfo
2012/04/22 20:33:46 Kindle not detected.
2012/04/22 20:33:46 This plugin requires a Kindle to be connected so that the plugin can read existing collection information and the data Calibre stored on the Kindle.
2012/04/22 20:33:46 END Configuration loading config store
Restarting with: C:\Program Files\Calibre2\calibre-debug.exe ['calibre-debug.exe', u'--gui-debug', u'c:\\docume~1\\peg\\locals~1\\temp\\tmpguobqh.txt ']
Is there any hope for me??