[rt-users] Error when upgrading 3.8.6 -> 3.8.8

[Shannon Adams]

Running CentOS 5.5 - fully patched.  Trying to upgrade from 3.8.6 to 3.8.8.

# make upgrade
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All dependencies have been found.
/opt/local/bin/ginstall -c -m 0755 -o root -g www -d /opt/rt3/etc
make: /opt/local/bin/ginstall: Command not found
make: *** [config-install] Error 127
#

I can't find anything in the README or UPGRADING doc that would indicate why I am getting this.  Thanks for any help.