Comment 1 for bug 896680

I ran the debug mode with and without touchpad attached.
HP Touchpad attached:
calibre Debug log
calibre 0.8.28
Windows-7-6.1.7601-SP1
Windows
('Windows', '7', '6.1.7601')
Python 2.7.1
Windows: ('7', '6.1.7601', 'SP1', 'Multiprocessor Free')
Starting up...
Started up in 10.9480001926 with 649 books
Job: 1 Get device information started
DeviceJob: 1 Get device information done, calling callback
DeviceJob:Job: 11 Get device informationGet device information finishedcallback returned

No details available.
Job: 2 Get list of books on device started
DEBUG: 0.0 USBMS: Fetching list of books from device. Device= WEBOS oncard= None
DEBUG: 0.0 USBMS: dirs are: F:\ .palmkindle
DEBUG: 0.0 USBMS: scan from root False F:\.palmkindle
DEBUG: 0.0 USBMS: count found in cache: 30, count of files in metadata: 30, need_sync: False
DEBUG: 0.0 USBMS: Finished fetching list of books from device. oncard= None
DEBUG: 0.0 USBMS: Fetching list of books from device. Device= WEBOS oncard= carda
DEBUG: 0.0 USBMS: Fetching list of books from device. Device= WEBOS oncard= cardb
DeviceJob: 2 Get list of books on device done, calling callback
DeviceJob: 2 Get list of books on device callback returned
Job: 1 Get device information finished
No details available.
Job: 2 Get list of books on device finished
No details available.
Unable to open SCSI controller 0:[\] , error code: 0x5
Unable to open SCSI controller 1:[\] , error code: 0x5

Without HP Touchpad attached:
calibre Debug log
calibre 0.8.28
Windows-7-6.1.7601-SP1
Windows
('Windows', '7', '6.1.7601')
Python 2.7.1
Windows: ('7', '6.1.7601', 'SP1', 'Multiprocessor Free')
Starting up...
Started up in 10.2660000324 with 649 books
Unable to open SCSI controller 0:[\] , error code: 0x5
Unable to open SCSI controller 1:[\] , error code: 0x5