After a bit of trouble I’ve got Deadline 4.1 working on OSX Lion (10.7) and Mountain Lion (10.8)
Install XQuartz
OSX 10.7+ no longer has X11 installed so you need to install an Open Source version called XQuartz from
http://xquartz.macosforge.org Current version is 2.7.4
After installation open a terminal and create a symbolic link so that Deadline will find the X11 it wants and start XQuartz
sudo ln -s /Applications/Utilities/XQuartz.app /Applications/Utilities/X11.app
Install MonoFramework-2.6.7_3.macos10.novell.universal.dmg
Get it from http://download.mono-project.com/archive/2.6.7/download/
Check mono version in terminal with mono -V
Install Deadline_Mac_Installers_4_1_SP1.dmg
http://www.thinkboxsoftware.com/deadline-downloads/deadline-archives/deadline-41-sp1-build-43205/Deadline_Mac_Installers_4_1_SP1.dmg
Start Deadline Launcher. Set the path to the Deadline Repository and set license to file /usr/local/flexlm/license.lic or your network server
Additional commands for a standalone license which I had to run to get permissions correct:
Change anything in < > to suit your system.
sudo mkdir /usr/local/flexlm
sudo chmod a+rwx /usr/local/flexlm
sudo cp /license.lic /usr/local/flexlm
sudo chmod a+r /usr/local/flexlm/license.lic
sudo chmod a+rwx /Users/
sudo chmod a+rw /Users//.flexlmrc