I have a CanoScan D1250U2 scanner USB connection
Canon ScanGear Toolbox 3.1
Whenever I fire up the scanner a dialogue box appears
"Canon ScanGear Toolbox
Unable to open Twain Source. Please check connection
Then restart toolbox"
It is connected. I have reinstalled all software even loaded the latest drivers. Still the same message appears. I have tried everything I can think of please help