Can't get photos from camera -

[Bob Goodwin]

gphoto2 is giving me the following error messages.  I used it a few days 
ago with a different camera and it worked without a hitch.

        gphoto2 --auto-detect
        Model                         
        Port                                           
        ----------------------------------------------------------
        USB PTP Class Camera           usb:           
        USB PTP Class Camera           usb:005,008    
        [root at box6 ~]# gphoto2 --list-files
                                                                                      

        *** Error ***             
        PTP I/O error

        *** Error ***             
        An error occurred in the io-library ('Unspecified error'): The
        supplied vendor or product id (0x0,0x0) is not valid.
        *** Error (-1: 'Unspecified error') ***      

        For debugging messages, please use the --debug option.
        Debugging messages may help finding a solution to your problem.
        If you intend to send any error or debug messages to the gphoto
        developer mailing list <gphoto-devel at lists.sourceforge.net>,
        please run
        gphoto2 as follows:

            env LANG=C gphoto2 --debug --debug-logfile=my-logfile.txt
        --list-files

        Please make sure there is sufficient quoting around the arguments.




        gphoto2 --get-all-files
                                                                                      

        *** Error ***             
        PTP I/O error

        *** Error ***             
        An error occurred in the io-library ('Unspecified error'): Could
        not query kernel driver of device.
        *** Error (-1: 'Unspecified error') ***      

        For debugging messages, please use the --debug option.
        Debugging messages may help finding a solution to your problem.
        If you intend to send any error or debug messages to the gphoto
        developer mailing list <gphoto-devel at lists.sourceforge.net>,
        please run
        gphoto2 as follows:

            env LANG=C gphoto2 --debug --debug-logfile=my-logfile.txt
        --get-all-files

        Please make sure there is sufficient quoting around the arguments.

Man gphoto2 is not much help or perhaps beyond my comprehension.

Any suggestions appreciated.

Bob Goodwin