[Mono-winforms-list] What does this error message mean and how do I resolve it?

[Michael Thomsen]

Mono System.Windows.Forms Assembly [Revision: 44101; built: 2005/5/5 21:38:=
0]

Unhandled Exception: System.TypeInitializationException: An exception was t=
hrown
 by the type initializer for System.Windows.Forms.XplatUI ---> System.DllNo=
tFoun
dException: libX11
in (wrapper managed-to-native) System.Windows.Forms.XplatUIX11:XInitThreads=
 ()
in <0x00090> System.Windows.Forms.XplatUIX11:.ctor ()
in <0x00060> System.Windows.Forms.XplatUIX11:GetInstance ()
in <0x00080> System.Windows.Forms.XplatUI:.cctor ()--- End of inner excepti=
on st
ack trace ---

in <0x00000> <unknown method>
in <0x0006c> System.Windows.Forms.Form:get_CreateParams ()
in <0x00068> System.Windows.Forms.Form:get_CreateParams ()
in <0x002c8> System.Windows.Forms.Control:.ctor ()
in <0x00028> System.Windows.Forms.ScrollableControl:.ctor ()
in <0x00018> System.Windows.Forms.ContainerControl:.ctor ()
in <0x0001c> System.Windows.Forms.Form:.ctor ()
in <0x0001c> BlogSharp.Gui.MainForm:.ctor ()
in (wrapper remoting-invoke-with-check) BlogSharp.Gui.MainForm:.ctor ()
in <0x00030> BlogSharp.Gui.MainForm:Main (System.String[] args)

I'm running this on a Mac from X11.app. Any suggestions? I have
libgdiplus from svn installed and I built my installation of mono from
svn recently.