I just received my Bookeen Cybook Muse FrontLight in the mail and am prepared to do what's necessary to get you the information you need to support it in Calibre.
Here's the output of my debug device connection with the Muse connected and no other USB devices attached (the Muse is drive D):
Code:
calibre 2.10 [64bit] isfrozen: True is64bit: True
Windows-8-6.2.9200 Windows ('64bit', 'WindowsPE')
('Windows', '8', '6.2.9200')
Python 2.7.8
Windows: ('8', '6.2.9200', '', 'Multiprocessor Free')
Successfully initialized third party plugins: Modify ePub
USB devices on system:
[u'usb\\vid_0bda&pid_0139&rev_3960',
u'usb\\vid_04f2&pid_b3fd&rev_6954',
u'usb\\vid_8087&pid_07dc&rev_0001',
u'usb\\vid_04f2&pid_b3fd&rev_6954&mi_00',
u'usb\\root_hub30&vid8086&pid9c31&rev0004',
u'usb\\vid_04f3&pid_010c&rev_0011',
u'usb\\vid_0525&pid_a4a5&rev_0230']
Unable to get free space for drive: E
(21, 'GetDiskFreeSpaceEx', 'The device is not ready.')
Drives detected:
(0) D:\ ~ \\?\STORAGE#VOLUME#_??_USBSTOR#DISK&VEN_USB_2.0&PROD_USB_FLASH_DRIVER&REV_0100#BK646BK1FEBF0855Y1&0#{53F56307-B6BF-11D0-94F2-00A0C91EFB8B}#{53F5630D-B6BF-11D0-94F2-00A0C91EFB8B}
No disabled plugins
Looking for devices of type: MTP_DEVICE
List of WPD PNP ids:
[u'\\\\?\\swd#wpdbusenum#_??_usbstor#disk&ven_usb_2.0&prod_usb_flash_driver&rev_0100#bk646bk1febf0855y1&1#{53f56307-b6bf-11d0-94f2-00a0c91efb8b}#{6ac27878-a6fa-4155-ba85-f98f491d4f33}',
u'\\\\?\\swd#wpdbusenum#_??_usbstor#disk&ven_usb_2.0&prod_usb_flash_driver&rev_0100#bk646bk1febf0855y1&0#{53f56307-b6bf-11d0-94f2-00a0c91efb8b}#{6ac27878-a6fa-4155-ba85-f98f491d4f33}']
No suitable MTP devices found
Looking for devices...
Devices possibly connected: None