Let me add that I believe it's because I manually removed files with munin in their name that is causing my problems. However, i didn't think the standard debian install would include munin files. I hope not.
apt-get install munin-node currently gets this error:
Setting up munin-node (1.2.5-1) ...
Initializing new plugins../var/lib/dpkg/info/munin-node.postinst: line 27: munin-node-configure: command not found
So maybe what I'm asking is how do I get munin files that are not part of the munin pkgs reinstalled (I guess there must be some).