Sorry for the double post, but I found out how to fix the issue and thought that it warranted a bump.
The Cavemen 2 Cosmos people recently changed the wasted food mechanic so that it is exposed to XML editing. You can read about it in this thread:
http://forums.civfanatics.com/showthread.php?t=446490
I took the CvGameCoreDLL.dll from the latest C2C SVN and replaced my RAND CvGameCoreDLL.dll with it (backing up the original file, naturally). I then similarly replaced the ANewDawnGlobalDefines XML file. If you go to the bottom of the XML file, you'll see a new variable called WASTAGE_START_CONSUMPTION_PERCENT. Set this to -1 and food wastage will be completely turned off.
I was convinced that this crude method would surely crash the game, but it actually seems to work. RAND loads up just fine and doesn't complain about the new dll, and the food wasting is gone. I've played a few turns and nothing crazy has happened.
This will totally break your existing savegames though.