AudioVision: System 7.5 Requires AppleVision 1.0.1 or Later

I just upgraded from System 7.1 to System 7.5, and noticed that my Sound control panel no longer shows the AudioVision option. I have reinstalled the AudioVision software using the Installer disk that originally came with my AudioVision 14 Display, but it did not solve this problem. How can I get the AudioVision option back?
Neither System 7.5 or System 7.5 Update 1.0 come with the required ~AudioVision extension you need. The supported display software for your monitor on a System 7.5.x computer is AppleVision Display Software 1.0.1 or later.

This software is available from the Apple Software Updates Web site at http://www.apple.com/swupdates/ .

Published Date: Feb 19, 2012