The key thing to remember is that System Exec is equivalent to you doing Start -> Run and entering a command there. echo is not a valid program to run. That's why it has to be run within the context of a command window.
The key thing to remember is that System Exec is equivalent to you doing Start -> Run and entering a command there. echo is not a valid program to run. That's why it has to be run within the context of a command window.