ver 0.6.3 error: Error communicating with device PRS-505

[scripo]

Error details:

unsupported operand type(s) for +: 'NoneType' and 'str'

Traceback (most recent call last):
  File "calibre\gui2\device.pyo", line 57, in run
  File "calibre\gui2\device.pyo", line 191, in _books
  File "calibre\devices\prs505\driver.pyo", line 97, in books
TypeError: unsupported operand type(s) for +: 'NoneType' and 'str

calibre - debug gives:

USB devices on system: [u'usb\\root_hub&vid8086&pid27ca&rev0001', u'usb\\root_hub&vid8086&pid27cb&rev0001', u'usb\\root_hub&vid8086&pid27c9&rev0001', u'usb\\root_hub&vid8086&pid27c8&rev0001', u'usb\\root_hub20&vid8086&pid27cc&rev0001', u'usb\\vid_0424&pid_223a&rev_0360', u'usb\\vid_0424&pid_2502&rev_0001', u'usb\\vid_0424&pid_2504&rev_0001', u'usb\\vid_046d&pid_c016&rev_0340', u'usb\\vid_054c&pid_031e&rev_0229', u'usb\\vid_13fe&pid_1d00&rev_0110', u'usb\\vid_413c&pid_2005&rev_0105']
Drives detected:
	(ID, Partitions, Drive letter)
	('IDE\\DISKWDC_WD1600JS-75NCB1_____________________10.02E01\\5&1037D8FE&0&0.0.0', 'No mount points found')
	('USBSTOR\\DISK&VEN_KINGSTON&PROD_DATATRAVELER_2.0&REV_PMAP\\5B6B1482ECB2&0', 1, u'E:\\')
	('USBSTOR\\DISK&VEN_SMSC&PROD_223_U_HS-CF&REV_3.60\\000223223223&0', 'No mount points found')
	('USBSTOR\\DISK&VEN_SMSC&PROD_223_U_HS-MS&REV_3.60\\000223223223&1', 'No mount points found')
	('USBSTOR\\DISK&VEN_SMSC&PROD_223_U_HS-SD/MMC&REV_3.60\\000223223223&3', 'No mount points found')
	('USBSTOR\\DISK&VEN_SMSC&PROD_223_U_HS-SM&REV_3.60\\000223223223&2', 'No mount points found')
	('USBSTOR\\DISK&VEN_SONY&PROD_PRS-505/UC&REV_1000\\080046100070C485&0', 'No mount points found')
	('USBSTOR\\DISK&VEN_SONY&PROD_PRS-505/UC:MS&REV_1000\\080046100070C485&1', 'No mount points found')
	('USBSTOR\\DISK&VEN_SONY&PROD_PRS-505/UC:SD&REV_1000\\080046100070C485&2', 8, u'P:\\')
Looking for BEBOOK
Looking for BEBOOK_MINI
Looking for BLACKBERRY
Looking for CYBOOKG3
Looking for EB600
Looking for IREXDR1000
Looking for JETBOOK
Looking for KINDLE
Looking for KINDLE2
Looking for KINDLE_DX
Looking for PRS500
Looking for PRS505
Device Connected: <calibre.devices.prs505.driver.PRS505 object at 0x029BFD30>
Trying to open device...
Main memory: None
Total space: (0, 0, 8042577920L)

[kovidgoyal]

Your SONY reader main memory is not being detected in windows. This indicates a problem with either your reader, or with your windows. calibre needs the main memory to be detected, or it will not work

[Emperium]

New user here, I am having the same error. I've tried it on my tower and my laptop. I don't have another eReader to try though, can anyone recommend a possible solution? Thank you.

[scripo]

I've tried calibre on other computer - same result.
However Sonys eBook Library still reading from my PRS.
Any suggestion?

Thanks.

[kovidgoyal]

Basically if you can't access your devices main memory using windows explorer, you wont be able to access it using calibre.