gphoto2 - cannot claim usb device

[Cyber Source]

I would start like this, before doing anything else, plug the camera in, 
turn it on and have a look at dmesg and your /var/log/messages, see if 
it's got a problem on that level first.

Frank Kumro wrote:

>Hi,
>  I am running slackware 10.2 with the 2.6.13 kernel and gphoto2
>(2.1.6) libgphoto2 (2.1.6) libgphoto2_port (0.5.1). I have used this
>camera in fedora core (3,4) and could get my photos out of the camera
>so I know it works. However now in slackware when I run the command to
>get my pictures i get this error
>
>bash-3.00$ gphoto2 --auto-detect --get-all-files
>Model                          Port
>----------------------------------------------------------
>Canon PowerShot A40            usb:
>Canon PowerShot A40            usb:003,004
>
>*** Error ***
>An error occurred in the io-library ('Could not claim the USB
>device'): Could not claim interface 0 (Operation not permitted). Make
>sure no other program or kernel module (such as sdc2xx, stv680,
>spca50x) is using the device and you have read/write access to the
>device.
>*** Error (-53: 'Could not claim the USB device') ***
>
>The only other program running is gaim and gkrellm. I do not have it
>set up to automount anything. Where should I start when trying to
>figure out whats wrong? Any help would be great!
>
>--
>Frank
>Shenanigans!!
>
>  
>