Calibre not detecting Iriver Story

Hi,
I'm trying to get Calibre to interface with my Iriver story. I've managed to get my PC to recognise the Iriver by putting a SD card in the reader , now the PC see it (see below Drives detected K:\) but calibre can't see it. I've tried enabling the iriver plugin but it still can't see it. I've also tried to install the latest Calibre version from the site. Any advise would be greatfully recieved.
Best regards
Cath xx

Version: 0.8.16
USB devices on system:
[u'usb\\root_hub&vid8086&pid27c9&rev0001',
 u'usb\\root_hub&vid8086&pid27ca&rev0001',
 u'usb\\root_hub&vid8086&pid27c8&rev0001',
 u'usb\\root_hub&vid8086&pid27cb&rev0001',
 u'usb\\root_hub20&vid8086&pid27cc&rev0001',
 u'usb\\vid_0471&pid_0815&rev_0000',
 u'usb\\vid_058f&pid_6362&rev_0126',
 u'usb\\vid_1006&pid_4023&rev_0323',
 u'usb\\vid_15ca&pid_00c3&rev_0512']
Drives detected:
 (0) J:\ ~ USBSTOR\DISK&VEN_IRIVER&PROD_STORY&REV_0323\372041756775&0
 (1) K:\ ~ USBSTOR\DISK&VEN_IRIVER&PROD_STORY&REV_0323\372041756775&1
Available plugins: ADAM ALEX ALURATEK_COLOR ANDROID ARCHOS7O AVANT AZBOOKA BAMBOOK
BLACKBERRY BOEYE_BDX BOEYE_BEX BOOQ BOOX COBY 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 ITALICA ITUNES JETBOOK JETBOOK_MINI
KINDLE KINDLE2 KINDLE_DX KOBO LIBREAIR LUMIREAD MENTOR MIBUK MOOVYBOOK
N516 N770 N810 NEWSMY NEXTBOOK NOOK NOOK_COLOR NUUT2 ORIZON PALMPRE
PDNOVEL PDNOVEL_KOBO PICO POCKETBOOK301 POCKETBOOK360 POCKETBOOK360P
POCKETBOOK602 POCKETBOOK701 PRS505 README S60 SHINEBOOK SNE SOVOS
SPECTRA STASH SUNSTECH_EB700 SWEEX TECLAST_K3 THEBOOK TREKSTOR
USER_DEFINED VELOCITYMICRO WEXLER

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Devices possibly connected: None