71. Why doesn't the Auto papersize setting work with Canon DR series scanners?

There is simply a problem with your settings. EzeScans 'Auto' papersize option does work with Canon DR Series scanners.

Please make sure that the F6 Job Admin scanner tab, Papersize option is set to Auto, MT option is unticked and SA option is ticked.

Make sure that EzeScan 4.1.48 or higher is installed.