Is there some obvious clue I'm just not seeing?

I am getting the following error message in ms.log:

Sep 13 12:59:30 2000: Monitor Server/11.9.2/P/PC Intel/Windows NT
4.0/1/11.9.2_OPT/Thu Jun 25 10:40:41 PDT 1998

Copyright 1993, 1998 Sybase, Inc. All rights reserved.
Unpublished rights reserved under U.S. copyright laws.
This software contains confidential and trade secret information of
Sybase,
Inc. Use, duplication or disclosure of the software and documentation
by
the U.S. Government is subject to restrictions set forth in a
license
agreement between the Government and Sybase, Inc. or other
written
agreement specifying the Government's rights to use the software and
any
applicable FAR provisions, for example, FAR 52.227-19.

Sybase, Inc. 6475 Christie Avenue, Emeryville, CA 94608, USA

Sep 13 12:59:30 2000: DB-Library Version:
Sep 13 12:59:30 2000: Sybase DB-Library/11.1.1/P2-EBF9035/PC
Intel/1/OPT/Thu May 04 15:21:20 2000

Sep 13 12:59:30 2000: Open Server Version:
Sep 13 12:59:30 2000: Sybase Server-Library/11.1.1/P2-EBF9035/PC
Intel/1/OPT/Thu May 04 15:16:56 2000

Sep 13 12:59:30 2000: Open Server: Fatal Error: 16013/20/0: Could not
find server name 'ETMSPROD_MS' in interfaces file

The Adaptive Server and Backup Server both have no trouble with the
location of/information in the interfaces file:

[ETMSPROD]
$BASE$01=NLWNSCK,XXXXX,6200
MASTER=$BASE$01;
$BASE$03=NLWNSCK,XXXXX,6200
QUERY=$BASE$03;

[ETMSPROD_BS]
$BASE$01=NLWNSCK,XXXXX,6201
MASTER=$BASE$01;
$BASE$03=NLWNSCK,XXXXX,6201
QUERY=$BASE$03;

[ETMSPROD_MS]
$BASE$01=NLWNSCK,XXXXX,6202
MASTER=$BASE$01;
$BASE$03=NLWNSCK,XXXXX,6202
QUERY=$BASE$03;

[ETMSPROD_XP]
$BASE$01=NLWNSCK,XXXXX,6204
MASTER=BASE$01;
$BASE$03=NLWNSCK,XXXXX,6204
QUERY=$BASE$03;

[ETMSWEB2_HS]
$BASE$01=NLWNSCK,XXXXX,6203
MASTER=$BASE$01;
$BASE$03=NLWNSCK,XXXXX,6203
QUERY=$BASE$03;