dtsx package runs by command prompt but not by .bat file

running a dtsx package by .bat file.

receiving the following error.

Could not load package "C:......dtsx" because of error 0xC0011002. Failed to open package file "C:......dtsx" due to error 0x800C0006. the system cannot locate the object specified. this occurs when loading a package and the file cannot be opened or loaded correctly into the xml document.

my .bat file is:

"C:\Program Files\Microsoft SQL Server\110\DTS\Binn\DTExec" /f C:\..\..\...dtsx

however if i run the exact same code by command prompt it runs.

ideas?