SSIS Package Won't Run In Production Server

Hi,

I have a package that I developed on my local machine and runs well. I run
it through the command line on my production server the following way:

D: estCMS_MoveContentToLive>dtexec /f
D: estCMS_MoveContentToLiveCMSMoveIte
mToLive.dtsx -de

The -de option is because i changed the default security protection level of
the package as BOL says that for the default protection level
(EncryptAllWithUserKey): "Only the user who created or exported the package
can open the package in SSIS Designer or run the package by using the dtexec
command prompt utility."

The problem is that the package does not run successfully and vomits a lot
of error message that I do not understand, such as:

<errorMessage>
Error: 2006-02-15 18:13:43.55
Code: 0xC004706E
Source: Data Flow Task DTS.Pipeline
Description: The module containing "component "Multicast" (637)" cannot
be lo
cated, even though it is registered.
End Error
Error: 2006-02-15 18:13:43.55
Code: 0xC004706E
Source: Data Flow Task DTS.Pipeline
Description: The module containing "component "OLE DB Destination" (756)"
can
not be located, even though it is registered.
End Error
...
Error: 2006-02-15 18:13:43.62
Code: 0xC0048021
Source: Data Flow Task Multicast [637]
Description: The component is missing, not registered, not upgradeable,
or mi
ssing required interfaces. The contact information for this component is
"Multic
ast;Microsoft Corporation;Microsoft SqlServer v9; (C) 2005 Microsoft
Corporation
; All Rights Reserved; http://www.microsoft.com/sql/support;0".
End Error
Error: 2006-02-15 18:13:43.62
Code: 0xC0047017
Source: Data Flow Task DTS.Pipeline
Description: component "Multicast" (637) failed validation and returned
error
code 0xC0048021.
End Error
</errorMessage>

Notice that at the end it says that the validation failed.

I looked on the internet but I did not found any information regarding this
issue.

I also created a dummy SSIS package that does not have any data flaw but
just have a single SQL task doing a single insert in a table. When i
execute it on the production server, it runs successfully!

Then what is wrong with my "complex" package that all the data flow
components seems to: "can not be located, even though it is registered." ???
To be exact, I have an error for all the data flow components except the
script component.

Thanks for any help.

Best regards,

Francois Malgreve

PS:

I also would like to mention that on my production server, only the SSIS
service is installed, not SQL Server itself.
When you run the setup of SQL 2005, it is indeed possible to install only
the SSIS component which is what I need in my case as SSIS packages are run
from a middle tier server and connect to various DBs.

I think this is important as I just discovered that the package can run
successfully when I run it on a server which has a full version of SQL
Server 2005. By that I mean having SQL Database Server + SSIS installed. But it will run only from the command line, if i run it from an asp.net application it won't run successfully and return the same kind of error i showed in this message. in a desesparate attempt to solve my problem, I granted more rights to the ASPNET user and NETWORK_SERVICE user by adding them in the administrator group as I quite believe it might be related to security as on that server it works well from the command line. But it did not help.