I got an S1500 and can't get the Manager to install. It runs and I click through the different Nexts, but then it doesn't go anywhere after the "Start Copying Files" step. It creates PFU > ScanSnap > Driver folder, but doesn't actually put the drivers in there and basically does nothing but sit around and take ~25% of Task Manager CPU time.
Tried lowering UAC to nothing. Did a manual trashing of all detritus from the previous install attempts. Just not sure where to go from here.