'Load report failed' msg reported by CrystalDecisions.CrystalReports.Engine

Question

Dear member,
We are using Crystal Report viewer (Version 11.5) from our Web based product on Windows Server 2003.
Sometime when we run the report generating application we get the error message 'Load report failed'.
So far, we don't find any problem in our product.
Has someone experienced a similar problem?
How did you solve the issue?
Thanks and best regards,
Makoto
Below are the error messages detail logged on event logs.
Event Type:     Error
Event Source:     AvantGard eTreasury
Event Category:     None
Event ID:     140
Date:          4/02/2011
Time:          2:21:31 PM
User:          N/A
Computer:     JP0010SWFIN41
Description:
The description for Event ID ( 140 ) in Source ( AvantGard eTreasury ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this description; see Help and Support for details. The following information is part of the event: Source: CrystalDecisions.CrystalReports.Engine
Target: EnsureDocumentIsOpened
Function: .Initialise
Message: Load report failed..
Event Type:     Error
Event Source:     AvantGard eTreasury
Event Category:     None
Event ID:     140
Date:          4/02/2011
Time:          2:14:18 PM
User:          N/A
Computer:     JP0010SWFIN41
Description:
The description for Event ID ( 140 ) in Source ( AvantGard eTreasury ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this description; see Help and Support for details. The following information is part of the event: Source: CrystalDecisions.CrystalReports.Engine
Target: PEOpenEngineEx
Function: .Initialise
Message: Attempted to read or write protected memory. This is often an indication that other memory is corrupt..

Answer 1

Make sure you are closing and disposing of the report object once you are finished with them.
What Service Pack are you on?
Thank you
Don