What is com.apple.launchctl.Aqua?

What is com.apple.launchctl.Aqua?

While troubleshooting a slow boot time in Lion (10.7), I saw these lines
in the sys log:
8/21/13 8:47:45.102 PM com.apple.launchctl.Aqua: load: option requires an
argument -- D
8/21/13 8:47:45.102 PM com.apple.launchctl.Aqua: usage: launchctl load
[-wF] [-D <user|local|network|system|all>] paths...
So naturally I want to find out where this script is and why it has this
error. I searched the usual LaunchAgent and LaunchDaemon directories, and
then searched the whole hard drive, but could not find a script by that
name.