Thanks, Wolfgang. I did try to search for it, but since the NI/CVI vocabulary is a bit different that what I'm accustomed to, searching isn't always fruitful for me.
So, I see that I have to enable the extended debug level to make this work (see? I did use the help!). It also says that Resource Tracking is only available in the Full Development System. Since I'm using an evaluation copy for now, and I'm not seeing anything in the Stack Trace window, I'm guessing I don't have this option. Pity...
Are you looking for a call stack display in connection with the resource tracking feature (which is FDS only) or for debugging, while stopped at a breakpoint? Your initial post doesn't specify. If you just want to see your debugging call stack, it's included in the Variables window (Window>>Variables).
The resource tracking window is for memory leak detection.