Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!spool.mu.edu!agate!violet.berkeley.edu!steve
From: steve@violet.berkeley.edu (Steve Goldfield)
Newsgroups: comp.sys.mac.system
Subject: no plural in extension-manager.hqx
Message-ID: <1991May24.185729.22982@agate.berkeley.edu>
Date: 24 May 91 18:57:29 GMT
Sender: root@agate.berkeley.edu (Charlie Root)
Organization: University of California, Berkeley
Lines: 7
Originator: steve@violet.berkeley.edu

The archive message gave the name as
/info-mac/cdev/extensions-manager.hqx

Actually, you will find it in sumex-aim as
/info-mac/cdev/extension-manager.hqx

Steve Goldfield