[HMonk]

Installed Dupe Finder plug-in from within Calibre "Get new plug-ins." Installation successful, restart, plug-in is listed as enabled in plug-in repository, and drop-down menu appears in Calibre main menu. However, about five seconds after Calibre starts, the main Calibre menu clears and repopulates without the find duplicate drop-down menu. The same thing happens if I install the plug-in from the ZIP file.

I attempted to active the plug-in by creating a hot-key shortcut - didn't work. AV
program is Comodo Suite but Comodo is not blocking the plug-in or its installation.

So, the question is: if the plug-in is reported as enabled and its drop-down menu appears in Calibre's main menu, what causes the main menu to repopulate without the dupe finder drop-down-menu? The debug report follows:

******************
calibre Debug log
calibre 3.7 [64bit] embedded-python: True is64bit: True
Windows-10-10.0.15063-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.15063')
Python 2.7.12+
Windows: ('10', '10.0.15063', 'SP0', u'Multiprocessor Free')
Interface language: None
Successfully initialized third party plugins: DeDRM (6, 3, 4) && Find Duplicates (1, 6, 3)
calibre 3.7 [64bit] embedded-python: True is64bit: True
Windows-10-10.0.15063-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.15063')
Python 2.7.12+
Windows: ('10', '10.0.15063', 'SP0', u'Multiprocessor Free')
Interface language: None
Successfully initialized third party plugins: DeDRM (6, 3, 4) && Find Duplicates (1, 6, 3)
Turning on automatic hidpi scaling
devicePixelRatio: 1.0
logicalDpi: 96.0 x 96.0
physicalDpi: 87.0857142857 x 83.34375
Using calibre Qt style: True
Starting up...
Failed to get storage number for drive: A with error: [Error 1] Incorrect function.
Storage number map:
{(7L, 0L): [(1L, 'L')],
(7L, 1L): [(1L, 'O'), (2L, 'C')],
(7L, 2L): [(1L, 'E'), (2L, 'I')],
(7L, 3L): [(1L, 'M')],
(7L, 4L): [(1L, 'D'), (2L, 'K'), (3L, 'G')],
(7L, 5L): [(1L, 'F')],
(7L, 6L): [(1L, 'R')],
(7L, 8L): [(1L, 'N')]}
Storage number for USBSTOR\DISK&VEN_KINDLE&PROD_INTERNAL_STORAGE&REV_ 0100\B006D0B113441D1R&0: StorageDeviceNumber(type=7L, number=8L, partition_number=0L)
Drive letters for USBDevice(vendor_id=0x1949 product_id=0x4 bcd=0x100 devid=usb\vid_1949&pid_0004&rev_0100 devinst=6)
{u'drive_letters': ['N'],
u'pnp_id_map': {'N': u'\\\\?\\usbstor#disk&ven_kindle&prod_internal_sto rage&rev_0100#b006d0b113441d1r&0#{53f56307-b6bf-11d0-94f2-00a0c91efb8b}'},
u'readonly_drives': set([]),
u'sort_map': {'N': (8L, 1L)}}
Started up in 7.30 seconds with 1618 books
Job: 1 Get device information started
DeviceJob: 1 Get device information done, calling callback
DeviceJob: 1 Get device information callback returned
Job: 2 Set library information started
DeviceJob: 2 Set library information done, calling callback
DeviceJob: 2 Set library information callback returned
Job: 3 Get list of books on device started
DEBUG: 0.0 USBMS: Fetching list of books from device. Device= KINDLE2 oncard= None
DEBUG: 0.0 USBMS: dirs are: N:\ documents
DEBUG: 0.3 USBMS: scan from root False N:\documents
DEBUG: 0.4 USBMS: count found in cache: 461, count of files in metadata: 461, need_sync: False
DEBUG: 0.4 USBMS: Finished fetching list of books from device. oncard= None
DEBUG: 0.4 USBMS: Fetching list of books from device. Device= KINDLE2 oncard= carda
DEBUG: 0.4 USBMS: Fetching list of books from device. Device= KINDLE2 oncard= cardb
DeviceJob: 3 Get list of books on device done, calling callback
DeviceJob: metadata_downloaded: Starting set_books_in_library
DeviceJob: set_books_in_library: books to process= 461
Job: 1 Get device information finished
No details available.
Job: 3 Get list of books on device finished
No details available.
Job: 2 Set library information finished
No details available.
DeviceJob: set_books_in_library finished: time= 0.0510001182556
DeviceJob: metadata_downloaded: updating views
DeviceJob: metadata_downloaded: syncing
DeviceJob: metadata_downloaded: refreshing ondevice
DeviceJob: metadata_downloaded: sending metadata_available signal
DeviceJob: 3 Get list of books on device callback returned
Job: 3 Get list of books on device finished
No details available.

Any suggestions would be appreciated.

Monk

.