Calibre doesn't detect Alex Spring Design 1.6

Sorry, hope there's no other thread (I could't find, but... O:-)

I upgraded my Spring Design Ales 6 (M/N DS-10) with firmware version 1.6 (kernel 2.6.28 comp.date 2010/12/01 12:29)

While Calibre found perfectly the device whith firmware version 1.5 (the original) now it can't find it.

I attach the "Debug device selection" from the Preferences -> Miscellaneous menú

BTW I've followed all the previous steps to ensure no other devices interference.

Regards, and congratulations for the soft.

GuiGo

---------------------- Debug device BEGIN ---------------------------
calibre 0.9.17 isfrozen: True is64bit: False
Windows-7-6.1.7601-SP1 Windows ('32bit', 'WindowsPE')
('Windows', '7', '6.1.7601')
Python 2.7.3
Windows: ('7', '6.1.7601', 'SP1', 'Multiprocessor Free')
USB devices on system:
[u'usb\\root_hub&vid8086&pid27ca&rev0002',
u'usb\\root_hub&vid8086&pid27cb&rev0002',
u'usb\\root_hub&vid8086&pid27c9&rev0002',
u'usb\\root_hub&vid8086&pid27c8&rev0002',
u'usb\\root_hub20&vid8086&pid27cc&rev0002',
u'usb\\vid_064e&pid_d214&rev_0100',
u'usb\\vid_064e&pid_d214&rev_0100&mi_00',
u'usb\\vid_0bb4&pid_0c02&rev_0224',
u'usb\\vid_0bb4&pid_0c02&rev_0224&mi_00',
u'usb\\vid_0bb4&pid_0c02&rev_0224&mi_01']
Drives detected:
(0) D:\ ~ \\?\STORAGE#VOLUME#_??_USBSTOR#DISK&VEN_ANDROID&PR OD___FILE-STOR_GADG&REV_ETFF#7&8907723&0&ALEX_READER&0#{53F5 6307-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'\\\\?\\wpdbusenumroot#umb#2&37c186b&0&storage#vo lume#_??_usbstor#disk&ven_android&prod___file-stor_gadg&rev_etff#7&8907723&0&alex_reader&0##{6ac 27878-a6fa-4155-ba85-f98f491d4f33}']
No suitable MTP devices found

Looking for devices...

Devices possibly connected: None
--------------------------Debug Device END ------------------------------------