Application Sharing error in Messenger 4.7.3000

From: Mike Bean (anonymous_at_discussions.microsoft.com)
Date: 09/28/04 

Date: Tue, 28 Sep 2004 05:54:45 -0700

Two Questions:

1) Application error:

Normal messaging operations OK but 'Start Application
Sharing', either as an initiator or receiver, causes an
error a few seconds after the exchange of invitation and
acceptance messages. Messenger does not fail on
the 'other' PC.

The error is: "Windows Messenger has encountered a problem
and needs to close. We are sorry for the
inconvenience." .. etc.

The error signature is:
  AppName: msmsgs.exe
  AppVer: 4.7.0.3000
  ModName: unknown
  ModVer: 0.0.0.0
  Offset: 00000000

I am running XP Professional 2002 Service Pack 2 and
Windows Messenger is version 4.7.3000.

2) Capacity

How many other Messenger users can I share applications
with? Either a hard limit or practical limit?

Thanks