[MonoDevelop] MonoDevelop on OSX - HELP

[Mike Virus]

I downloaded the OSX installer from http://mirrors.dotsrc.org/devlibosx/

I ran the installer and when I try to launch MonoDevelop it crashes.

When I launch from the command line I get the following error:

/Applications/MonoDevelop.app/Contents/Resources/script: line 3: open- 
x11: command not found


Does anyone have any ideas on what I can do to resolve this?

Thanks,
    Mike