-2147417848: 'Automation error The object invoked has disconnected from its clients.'

Hi,

I have a custom 2-Tier/Fat client COM based application that is built
using VB 6.0 Service Pack 6 connecting to an MS SQL Server 2000 DB. The following error is reported 'periodically'/at times from client PCs.

The affected PCs are running Windows XP Service Pack 2 (only OS
installed at client site) but the issue is also reported on Windows
2000 SP4 machines:

Err. No: '-2147417848'
Err Desc: 'Automation error The object invoked has disconnected from
its clients.'

I've confirmed the reasons provided in the following links aren't
causing this particular problem as reported here:

(a). Q270589 BUG: Run-Time Error Message -2147417848 (80010108) When
Passing Array of Dictionary Objects
(b) Q192129 PRB: Run-Time Error '373' or '-2147417848(80010108)'
(c) Q254908 FIX: Application with Inet Control Gets -2147417848
Automation Error Message
(d) Q171812 FIX: Run-Time Error When DataObject Passed as Object
(e) Q264658 XL2000: Format Painter Causes Excel to Stop Responding If
Date Watch Add-in Is Enabled
(f) Q231144 XL2000: Cut and Paste Operation in Visual Basic Procedure
Hangs Excel
(g) Q194912 FIX: Add Method of Forms Collection Fails in Executable
(h) Q223080 FIX: ADODC Errors When RecordSet Property is set to NULL
(i) Q223116 FIX: Public Type Statement Causes Application Error
(j) Q223077 FIX: VB 6.0 Adding Split to a DataGrid May Cause Error

I'd appreciate any new ideas as to why this error is occurring.

Thank you.