Only internal memory of 602 found but not scanned

[niji]

for several days (perhaps since 0.7.37?), the micro-sd is recognized (i suppose because the default send to device is set to A-card is normally fonctionning , writing the books in the micro SD. But, this SD is not shown in menu and the books are not declared as present in the microSD. Only internal memory is checked.
All was correct before 0.7.37

detection debugger :

Version: 0.7.37
USB devices on system:
[u'usb\\root_hub&vid8086&pid2935&rev0002',
u'usb\\root_hub&vid8086&pid2939&rev0002',
u'usb\\root_hub&vid8086&pid2936&rev0002',
u'usb\\root_hub&vid8086&pid2938&rev0002',
u'usb\\root_hub&vid8086&pid2937&rev0002',
u'usb\\root_hub&vid8086&pid2934&rev0002',
u'usb\\root_hub&vid1033&pid0035&rev0043',
u'usb\\root_hub&vid1033&pid0035&rev0043',
u'usb\\root_hub20&vid8086&pid293c&rev0002',
u'usb\\root_hub20&vid8086&pid293a&rev0002',
u'usb\\root_hub20&vid1033&pid00e0&rev0004',
u'usb\\vid_0409&pid_0058&rev_0100',
u'usb\\vid_04a9&pid_10a2&rev_0109',
u'usb\\vid_04a9&pid_221b&rev_0200',
u'usb\\vid_0525&pid_a4a5&rev_0324',
u'usb\\vid_0644&pid_0200&rev_0412',
u'usb\\vid_06b9&pid_4061&rev_0000',
u'usb\\vid_0733&pid_0401&rev_0090',
u'usb\\vid_413c&pid_2003&rev_0306',
u'usb\\vid_413c&pid_3012&rev_4301']
Drives detected:
(0) M:\ ~ USBSTOR\DISK&VEN_&PROD_PB602&REV_0324\3230204E6F76 &0
(1) O:\ ~ USBSTOR\DISK&VEN_&PROD_PB602&REV_0324\3230204E6F76 &1
Available plugins: ALEX ALURATEK_COLOR ANDROID AVANT AZBOOKA BAMBOOK BLACKBERRY BOOQ BOOX
COOL_ER CYBOOK DBOOK E52 E71X EB511 EB600 EBK52 ECLICTO EDGE EEEREADER
ELONEX ESLICK FOLDER_DEVICE_FOR_CONFIG GEMEI GER2 HANLINV3 HANLINV5
ILIAD INVESBOOK IPAPYRUS IREXDR1000 IREXDR800 IRIVER_STORY ITALICA
ITUNES JETBOOK JETBOOK_MINI KINDLE KINDLE2 KINDLE_DX KOBO KOGAN
LUMIREAD MENTOR MIBUK N516 N770 N810 NEWSMY NEXTBOOK NOOK NOOK_COLOR
NUUT2 ORIZON PALMPRE PDNOVEL PDNOVEL_KOBO PICO POCKETBOOK301
POCKETBOOK360 POCKETBOOK602 POCKETBOOK701 PRS505 Q600 README S60
SHINEBOOK SNE SOVOS SPECTRA SUNSTECH_EB700 SWEEX TECLAST_K3 THEBOOK
TREKSTOR VELOCITYMICRO

Looking for devices...
u'usb\\vid_0525&pid_a4a5&rev_0324'
Detected possible device POCKETBOOK602
Devices possibly connected: PocketBook Pro 602/902 Device Interface,
Trying to open PocketBook Pro 602/902 Device Interface ... OK
Main memory: 'M:\\'
Total space: (1068535808, 7964983296L, 0)

Thanks for your help

Alain