I have a Brother MFC 210C on Ubuntu Dapper which I installed using http://ubuntuforums.org/showthread.php?t=105703 . Everything was working great (both printing and scanning using xsane) but somehow the scanning has stopped working. I tried uninstalling things and reinstalling, but nothing has changed.
What happens is: xsane starts fine (which indicates that the scanner is recognized OK), but when I click on Scan, I get "Failed to start scanner: Invalid argument". Any ideas?