Unable to load package

Question

I have created an SSIS package in BI dev studio which i can debug and run fine. I have saved the dtsx file to a production server which calls it using dtexec as part of a batch script (we are migrating from foxpro). I am getting the following error that i dont understand.
I dont know if this is relevant but i cant execute packages by double clicking them as DTexecui is not installed (not sure why as i have installed the client tools and integration server). Hardware is Dell poweredge 2850 dual xeon 2gb ram with win 2k sp4 and sql 2005 sp1.
Microsoft (R) SQL Server Execute Package Utility
Version 9.00.1399.06 for 32-bit
Copyright (C) Microsoft Corp 1984-2005. All rights reserved.
Started:  12:29:19
Error: 2006-07-06 12:29:20.75
   Code: 0xC0011007
   Source: {B06EB426-BBE8-4E09-87FC-32ED753A142F}
   Description: Unable to load the package as XML because of package does not ha
ve a valid XML format. A specific XML parser error will be posted.
End Error
Error: 2006-07-06 12:29:20.79
   Code: 0xC0011002
   Source: {B06EB426-BBE8-4E09-87FC-32ED753A142F}
   Description: Failed to open package file "\\SERVER_A\Scripts\CLIENT\Package.dtsx" due to error 0x800C0006 "The system cannot locate the object specified.".  This happens when loading a package and the file cannot be opened or loaded correctly  into the XML document. This can be the result of either providing an incorrect file name was specified when calling LoadPackage or the XML file was specified and has an incorrect format.
End Error
Could not load package "\\\\SERVER_A\Scripts\CLIENT\Package.dtsx" because of error 0xC0011002.
Description: Failed to open package file \\SERVER_A\Scripts\CLIENT\Package.dtsx" due to error 0x800C0006 "The system cannot locate the object specified.".  This hap
pens when loading a package and the file cannot be opened or loaded correctly in
to the XML document. This can be the result of either providing an incorrect fil
e name was specified when calling LoadPackage or the XML file was specified and
has an incorrect format.
Source: {B06EB426-BBE8-4E09-87FC-32ED753A142F}
Started:  12:29:19
Finished: 12:29:20
Elapsed:  1.719 seconds

Answer 1

 We are having the same problem:
My team is using SqlServer 2005 SSIS to develop  package for Consolidated Views. This works fine on my machine in Visual Studio when they run it as a script from command prompt from their desktop. However, when they move this package to ETL box, the package runs fine Visual Studio environment but fails when run from the script with the errors: 
Started:  12:57:45 PM
Error: 2006-08-04 12:57:45.87
   Code: 0xC0011007
   Source: {519D338B-8874-40A8-A385-0D53E868A57C}
Description: Unable to load the package as XML because of package does not have a valid XML format. A specific XML parser error will be posted.
End Error
Error: 2006-08-04 12:57:45.87
   Code: 0xC0011002
   Source: {519D338B-8874-40A8-A385-0D53E868A57C}
Description: Failed to open package file "C:\SM_BI_EXTRACTS_SHARED\Shared\Int
egrated Views\Integrated Views\CV_Product.dtsx" due to error 0x800C0006 "The system cannot locate the object specified.".  This happens when loading a package a nd the file cannot be opened or loaded correctly into the XML document. This can be the result of either providing an incorrect file name was specified when calling LoadPackage or the XML file was specified and has an incorrect format.
End Error
Could not load package "C:\SM_BI_EXTRACTS_SHARED\Shared\Integrated Views\Integrated Views\CV_Product.dtsx" because of error 0xC0011002.
Description: Failed to open package file "C:\SM_BI_EXTRACTS_SHARED\Shared\Integr
ated Views\Integrated Views\CV_Product.dtsx" due to error 0x800C0006 "The system  cannot locate the object specified.".  This happens when loading a package and the file cannot be opened or loaded correctly into the XML document. This can be  the result of either providing an incorrect file name was specified when calling LoadPackage or the XML file was specified and has an incorrect format.
Source: {519D338B-8874-40A8-A385-0D53E868A57C}
Started:  12:57:45 PM
Finished: 12:57:45 PM
Elapsed:  0.016 seconds
C:\SM_BI_EXTRACTS_SHARED\Shared>rem "C:\Program Files\Microsoft SQL Server\90\DT
S\Binn\dtexec" /f "C:\SM_BI_EXTRACTS_SHARED\Shared\SSIS\IntegratedViews\Integrat
edViews\CV_Sales_Rep.dtsx"
C:\SM_BI_EXTRACTS_SHARED\Shared>rem "C:\Program Files\Microsoft SQL Server\90\DT
S\Binn\dtexec" /f "C:\SM_BI_EXTRACTS_SHARED\Shared\SSIS\IntegratedViews\Integrat
edViews\CV_Sales.dtsx"
Can someone help us understand the problem? We are new to SSIS. We also want to know exactly what needs to be on the Server that will be running our SSIS ETL programs (that is, what components of SSIS -- SQL Server 2K5 is already loaded).
We are using SQL 2005 on Dell Servers running Win 2003, with the latest service packs. Microsoft SQL Server Integration Services Designer Version 9.00.2047.00