Windows 8 and scanning

I had CD X5 installed in WIN7 Pro 64.  Everything was working fine including my Canon CanoScan 4400F scanner.  I upgraded to WIN8 Pro 64 and now my Acquire button won't work so I can't scan directly to CorelDraw or Photo Paint..  I made sure to download the latest driver and the scanner does work using the Canon software.  What's the trick for getting the Acquire button to work?