error 56: can't open file

    AREA    demo9,CODE,READONLY
START
    LDR  R0,=0xABCDDCBA
here    B here 
         END

while compling the code in C51 keil i am getting

Running with Code Size Limit: 2K
Load "C:\\demo9\\Objects\\demo9"
_____^
*** error 56: can't open file  AND 

while compling the code in C51 keil i am getting

Running with Code Size Limit: 2K
Load "C:\\demo9\\Objects\\demo9"
_____^
*** error 56: can't open file Please suggest