Can not launch aplication from AWN

In Ubuntu Hardy when I click on any launcher in the Avant bar, the application doesn't launches.
From the terminal I get those errors with different applications:

goetz@fortaleza:~$ avant-window-navigator
Screen is composited.
LOADED : /usr/share/applications/Swiftfox.desktop
LOADED : /usr/share/applications/rhythmbox.desktop
LOADED : /usr/share/applications/gcalctool.desktop
LOADED : /usr/share/applications/gnome-terminal.desktop
LOADED : /usr/share/applications/gnome-terminal.desktop
APPLET : /usr/lib/awn/applets/taskman.desktop
Launched application : 28513
Error: Failed to execute child process "gnome-terminal" (Bad address)
Error: Failed to execute child process "gcalctool" (Bad address)
Launched application : 28561
Error: Failed to execute child process "gnome-terminal" (Bad address)

Some times it works, but some times it doesn't.

I'm using this PPA repo for Hardy

deb http://ppa.launchpad.net/reacocard-awn/ubuntu hardy main

avant-window-navigator-bzr
0.3.1.bzr232.1~hardy

I'm using the Compiz 0.7.4, the one that comes with Hardy.

In Gutsy I did not had this problem.