More info about "failed to reset"
This happened to me, and it was a mechanical issue/design flaw, not a driver issue. When you open up the scanner, you should see a black belt inside, under the glass. For me, that black belt got caught on some of the bits protruding from the green circuit board.
To solve this, unplug your scanner. Get a long, very thin stick. It needs to be able to fit inside the small holes on the bottom of the scanner near the circuit board and wiggle around (I used the needle of one of those compasses used for drawing circles). Depending on where the belt is caught, you may be able to use the stick to gently pry it off of the circuit board where it's stuck.
This fixed the problem for me and allowed the scanner cartridge to move freely again. Unfortunately, in my case, the belt is all bent out of shape from the scanner struggling to pull against it, so it's more prone to getting caught again. So it's a temporary fix.
Mustek A3 USB...
on Feb 15, 2013