STAAD Pro file not recognized

Why my STAAD Pro analysis saying that my first line is not starting with "STAAD" while it's clearly showing STAAD SPACE ..... in the first line. Here is what shown in the output file of that run.  I see there are some symbols in front of my first line, which is invisible in the Editor and I don't know how to get rid of. Please help!
 

 
     1. STAAD SPACE 24FT STANDARD CO MODULE ASSEMBLY
INPUT FILE: C:\Users\Xiaoxia\Documents\JMI\STAAD FILES\Module24ft.STD
 
   *** ERROR *** ABOVE COMMAND IS NOT RECOGNIZED. LINE IGNORED.
 
   DATA-CHECK MODE IS ENTERED.
 
 
 
             *********** END OF THE STAAD.Pro RUN ***********
 

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