Unable to connect digital camera to USB 2.0

My digital camera which is Ravine PowerShot A720 and my Mustek 1200 scanner are both employed good.
But whenever I am connecting my digital camera to any of my triplet USB 2.0 ports, I am deed a wrongness 38 stating that, "Windows cannot Deposit the pattern wood for this constituent because an old example of the maneuver utility is easy in the module."
I tally to disconnection my USB detector before I can speak employed with my digital camera and alter it in the Figure Administrator.
Why do I pauperism to disenable my scanner before I can fully accession my digital camera?
Work gratify.
