>Does this work if Debug Info is not included in an application?

The Help says:
"AStackIinfo( ) only populates the 6th array element if source line contents are available, otherwise it will be left empty."

And I just tested to make sure, it is the DebugInfo thats controling it.

>P.S. I missed this originally. How about adding the command or key concept you are explaining in the subject line?

Sure