I have many C-files in the project. I would like to include inline assembly in some files so I do this step, - I include assembly code between "#pragma asm" and "#pragma endasm" - I include "#pragma src" on the top of that file. when I compile, it said "Fatal Error L210: I/O Error on Input File" "Exception 0021H: Path or File Not Found" It has only 1 error. I try to use this step with the project that has only 1 C-file, it works. So I think it's because of many C-file. One thing that I see is it tell me the same result even though I include only src directive(don't include any assembly code). How should I do? Thank you very much for your suggestion. :)