First time I had trouble with mine,(old one was stopping part way through the scan, and not doing anything else,acting as if it had scanned the whole page) went to the shop on Friday, he gave me a new black one, and it works spectacular!
Thats what mine keeps doing..all of them lol. I was thinking it had to be a software issue, but Matt said a ton of these old scanners all started breaking down the past few weeks.
Dale