XDarwin wont run

[Henrik]

When I try to open the XDarwin.app it goes into a black screen and then quits..

I get the following launch info in the console app


This is a pre-release version of XFree86, and is not supported in any
way. Bugs may be reported to XFree86@XFree86.Org and patches submitted
to fixes@XFree86.Org. Before reporting bugs in pre-release versions,
please check the latest version in the XFree86 CVS repository
(http://www.XFree86.Org/cvs)

XFree86 Version 4.0.99.4 / X Window System
(protocol Version 11, revision 0, vendor release 6510)
Release Date: xx May 2001
If the server is older than 6-12 months, or if your hardware is
newer than the above date, look for a newer version before
reporting problems. (See <A HREF="http://www.XFree86.Org/FAQ)" TARGET=_blank>http://www.XFree86.Org/FAQ)</A>
Operating System: Darwin
Display mode: Quartz
Aug 27 01:04:07 XDarwin[619] Exception raised during posting of notification. Ignored. exception: launch path not accessible
Couldn't open RGB_DB '/usr/X11R6/lib/X11/rgb'
_XSERVTransmkdir: Owner of /tmp/.X11-unix should be set to root
error opening security policy file /usr/X11R6/lib/X11/xserver/SecurityPolicy
Could not init font path element /usr/X11R6/lib/X11/fonts/misc/, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/Speedo/, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/Type1/, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/CID/, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/75dpi/, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/100dpi/, removing from list!

Fatal server error:
could not open default font 'fixed'
OsVendorFatalError
AbortDDX
Quitting XDarwin...


Does anyone know how I can fix this problem?
Thanks!

[apex]

You appear to have an incomplete X11 installation. If you had the full install, be sure you run the installer as root.