Nut upsuser - Feb 2015 - USBDEVFS_CONTROL failed

Hello list,

I have a "Salicru SPS One 700VA" in a Debian Wheezy server. I
configured a week ago, it works well, but today it start to show "UPS
salicru at 192.168.x.x:3493 is unavailable"

And I got this in the system logs:

# dmesg
[147080.501925] usb 4-5: usbfs: USBDEVFS_CONTROL failed cmd blazer_usb
rqt 128 rq 6 len 255 ret -62
[147080.503913] usb 4-5: usbfs: USBDEVFS_CONTROL failed cmd blazer_usb
rqt 128 rq 6 len 255 ret -62
[147089.509450] usb 4-5: usbfs: USBDEVFS_CONTROL failed cmd blazer_usb
rqt 128 rq 6 len 255 ret -62
[147089.511436] usb 4-5: usbfs: USBDEVFS_CONTROL failed cmd blazer_usb
rqt 128 rq 6 len 255 ret -62

This is my device configuration:

# cat /etc/nut/ups.conf
[salicru]
driver = blazer_usb
port = auto
desc = "Salicru SPS One 700VA"
pollinterval = 10

Need I configure something else? Anyone with same problema?

Thanks and regards.

-- 
Josu Lazkano