Incorrect Warning About Missing DtsConfig File

I built my package on my development machine with a config file at a given location. Let's say:-


C:DevelopmentdtsConfig.xml

Then I shipped my package to the Production machine and ran my package (in a .bat file) as follows:-


DTExec /FILE "C:ProductionPackage.dtsx" /CONFIGFILE "C:ProductiondtsConfig.xml"

But I get the following output:-

Microsoft (R) SQL Server Execute Package Utility
Version 9.00.3042.00 for 32-bit
Copyright (C) Microsoft Corp 1984-2005. All rights reserved.
Started: 10:01:27 PM
Warning: 2007-11-30 22:01:29.52
Code: 0x80012012
Source: Package
Description: The configuration file name "C:DevelopmentdtsConfig.xml" is not valid. Check the configuration file name.
End Warning
...

But then it goes on to read values from my Production config file.
How can I stop the annoying warning about my Development config file-path (which doesn't exist on the Production machine)

Thanks