SSIS command line execution error

I am running a 2005 package on windows 2008 R2 machine using commandline.

when i run the package using visual studio 2005 , the package runs fine, but when i do it through command line, i see the below error.

Any ideas?

commandline

D:\program files\Microsoft SQL Server\90\DTS\Binn>dtexec.exe /FILE \\packages\example.dtsx  
Microsoft (R) SQL Server Execute Package Utility
Version 9.00.4035.00 for 64-bit
Copyright (C) Microsoft Corp 1984-2005. All rights reserved.

Started:  4:57:45 PM
Could not create DTS.Application because of error 0x80040154
Started:  4:57:45 PM
Finished: 4:57:45 PM
Elapsed:  0 seconds