Have you tried doing this as root?

I have the same camera.  I received the same message when I ran gphoto as
an ordinary user; the user did not have permission to access
/dev/usb/dc2xx0.  Running gphoto as root made it happy.

David wrote:

> I know gphoto talks to my camera (kodak dc3400) because I've done it via
> a serial port.
>
> When I run gphoto and attempt to configure the camera using device
> /dev/usb/dc2xx0 I receive an error message that says:
>
> missing serial device permissions, please check the permissions (see the
> manual)
>
> The manual has nothing about usb in it and the gphoto main screen has an
> error on the bottom left of the screen saying "failed to open
> /dev/usb/dc2xx0"
>
> the following usb modules are loaded: uhci dc2xx usbcore
>
> Any suggestions?
>
> --
> SLUG - Sydney Linux User's Group - http://slug.org.au/
> More Info: http://lists.slug.org.au/listinfo/slug

-- 
SLUG - Sydney Linux User's Group - http://slug.org.au/
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