Visioneer OneTouch 9520 User Manual page 146

T 139
ROUBLESHOOTING
Problem: The installation will not complete successfully. If
installation finishes, the scanner's OneTouch 4.0 options do not
seem to work properly. What do I do?
A likely cause is that some driver programs are already installed on your
computer for another scanner. They are interfering with the installation
and OneTouch options, and you need to remove those other drivers and
re-install your Visioneer 9520 Photo scanner. Please see the
documentation that you received with the other scanner for the steps to
remove its driver programs. You can also use the basic steps in the
section "How to Uninstall Your Scanner" on page 140, but in Step 3,
instead of uninstalling OneTouch 4.0, uninstall the other scanner's
driver programs. After uninstalling the other scanner's driver programs,
uninstall OneTouch 4.0 using the steps on page 140, then reinstall it
using the steps on page 8.