I just bought a new Epson GT-S50 scanner. I installed the software and was able to scan using the installed software. The scanner has several functions to automatically scan by selecting profiles on the scanner and pressing the scan button on the scanner. Unfortunately, when I did this, it brought up the old scanner software which is unable to find the old Canon scanner and errors out. I will be using the Canon scanner from time to time so don't want to uninstall it. How do you set the default scanning software in windows?