Canon A40 trouble

[Robert Hemus]

Kind scholars,
I'm in a pickle, again.  My camera had been working in LibraNet 2.8.1
and SuSE 9.0 like a champ.  Yesterday I tried to download some pix in
both distros, but couldn't get no satisfaction!!  
In LN I've been using gtkam 'cause it lists my camera.  When I open
gtkam with my camera hooked up and on, I get a little window that says,
in the top bar, "Bad paramaters" with the message, "Could not list
folders in "/". There is a button that says "more", click on it and it
says, "An error occurred in the io-library ('Could not claim the USB
device'): Could not claim interface 0 (Device or resource busy). Make
sure no other program or kernel module (e.g. dc2xx or stv680) is using
the device and you have read/write access to the device."

What am I to do??
Thanks much in advance.
Bob