(de)crescendo on items with specified volume

[James Wilkinson]

I'm getting this message:

"programming error: (de)crescendo on items with specified volume"

The output looks fine, but I'd like to eliminate the message, anyway.

It doesn't tell me what or where I did that makes it unhappy, and I'm 
not sharp enough to tell from the message itself why it's unhappy. So 
the next step is to, one at a time, remove all my (de)crescendos to 
see when the error goes away. Before doing that, I decided to ask you 
guys.

thanks
--
-------------------------------------------------------------
Jimmy Wilkinson            | Professor Emeritus of Computer Science
address@hidden        | The College of Charleston
(843) 953-8160             | Charleston      SC        29424
http://www.cs.cofc.edu/~jimmy

If there is one word to describe me, that word would have to be 
"profectionist".
Any form of incompitence is an athema to me.
Metathesis??? Don't ax me.
Just between you and I, the grammar used by Americans are getting worse.
I can only help but wonder what the cause of this might be.
It just ceases to amaze me how it could be the case, but mostly I 
could care less.