Mac OS 9.1: AppleShare Client Disappears From Chooser

Installing AppleShare IP or component updates of version 6.3.2 or earlier (or installing the Mac OS Server Admin application included with that software) may cause the AppleShare client extension to disappear from the Extensions folder and the Chooser.
For a discussion of this issue, please see:

Article 10609: "Mac OS 9.1, AppleShare IP 6.3: Installing Mac OS Server Admin"
Published Date: Feb 17, 2012