Looks the Same:

Nokia-N900:~# cat /etc/sudoers.d/genwall.sudoers
user ALL = NOPASSWD: /usr/bin/run-standalone.sh /opt/genwall/genwall
user ALL = NOPASSWD: /usr/bin/run-standalone.sh genwall
Nokia-N900:~# cat /usr/share/applications/hildon/genwall.desktop
[Desktop Entry]
Encoding=UTF-8
Version=1.0
Type=Application
Terminal=false
Name=Genwall
Exec=sudo run-standalone.sh /opt/genwall/genwall
Icon=genwall
X-Window-Icon=genwall
X-HildonDesk-ShowInToolbar=true
X-Osso-Type=application/x-executable
Nokia-N900:~#

Also it's a new install. Starting from the commandline just works