I meant to post this question here, but accidentally ended up posting it in
the Excel General Questions forum. Rather than re-post the entire message
here, I'll summarize the question here. If you are interested, please go to
Excel General Questions and view the entire post there.

I've written a function() that validates the interrelationship
between 3 cells. When I run the function with all 3 cells empty, I get the
#VALUE! error. Can anyone spot what's triggering
the #VALUE! error, or suggest further debugging ideas?