This app was working fine previously. Only non-domain users are affected.
Here is what I get from the Application Event Log:

Client Gets This Message:
"Server Application Unavailable"

Here is what the Application Event Log Says:
Event Type: Warning
Event Source: MsiInstaller
Event Category: None
Event ID: 1004
Date: 8/31/2005
Time: 3:24:41 PM
User: CADE\IUSR_SERVER
Computer: ARTEMIS
Description:
Detection of product '{90110409-6000-11D3-8CFE-0050048383C9}', feature
'OfficeUserData', component '{4A31E933-6F67-11D2-AAA2-00A0C90F57B0}' failed.
The resource 'HKEY_CURRENT_USER\Software\ODBC\ODBC.INI\MS Access Database\'
does not exist.

Event Type: Warning
Event Source: MsiInstaller
Event Category: None
Event ID: 1015
Date: 8/31/2005
Time: 9:20:52 AM
User: CADE\IUSR_SERVER
Computer: ARTEMIS
Description:
Failed to connect to server. Error: 0x80070005

Event Type: Error
Event Source: ASP.NET 1.1.4322.0
Event Category: None
Event ID: 1000
Date: 8/31/2005
Time: 9:21:18 AM
User: N/A
Computer: ARTEMIS
Description:
aspnet_wp.exe (PID: 2432) stopped unexpectedly.