command is invalid prompt

Is there any way to turn off the message box prompt that says the "command line is invalid"  in Test Execute when it cannot find the routine?

It does not return an error code until you click one of the buttons in the message box.



Example: I  have a list of routines that I want to  run.  I use a python system call to start Test Execute, if the routine doesn't exist when Test Execute starts it displays a message box with the "command line is invalid" error.   I want it to continue on to the next test without having to click the button. ( Test Execute returns a 3 error code after manually click a button, which is good)



Thanks