Line level debug in LISP

I think I’m getting too old for this…When AutoDesk changed it’s method of debugging LISP code from the screen dump to the debugger, it was still possible to find the line where the error occurred. With Intellicad 8.x, how do I do that? All I’m getting is that an error occurred in a variable. I need to see the specific instance of the failure.Is there a list of changes in Intellicad’s LISP interpreter that somebody can direct me to? I’m not finding anything in the help files that came with the 8.x download.ThanksRick Kaplan