[Mono-osx] WinForms Hello World did not start

[xtonic]

My environment:

   Mac OSX  10.6.4
   Mono 2.8.2
   XQuartz 2.6.0

I followed the link, http://mono-project.com/Mono_Basics, to create WinForms
Hello World testing program. However, I got the following error:

Unhandled Exception: System.TypeInitializationException: An exception was
thrown by the type initializer for
System.Windows.Forms.WindowsFormsSynchronizationContext --->
System.TypeInitializationException: An exception was thrown by the type
initializer for System.Windows.Forms.ThemeEngine --->
System.TypeInitializationException: An exception was thrown by the type
initializer for System.Windows.Forms.ThemeWin32Classic --->
System.TypeInitializationException: An exception was thrown by the type
initializer for System.Drawing.KnownColors --->
System.TypeInitializationException: An exception was thrown by the type
initializer for System.Drawing.GDIPlus ---> System.DllNotFoundException:
/Library/Frameworks/Mono.framework/Versions/2.8.2/lib/libgdiplus.dylib
  at (wrapper managed-to-native) System.Drawing.GDIPlus:GdiplusStartup
(ulong&,System.Drawing.GdiplusStartupInput&,System.Drawing.GdiplusStartupOutput&)
  at System.Drawing.GDIPlus..cctor () [0x00000] in <filename unknown>:0 
  --- End of inner exception stack trace ---
  at System.Drawing.KnownColors..cctor () [0x00000] in <filename unknown>:0 
  --- End of inner exception stack trace ---

I checked the libgdiplus.dylib and it looked OK
$ otool -L
/Library/Frameworks/Mono.framework/Versions/2.8.2/lib/libgdiplus.dylib
/Library/Frameworks/Mono.framework/Versions/2.8.2/lib/libgdiplus.dylib:
	/Library/Frameworks/Mono.framework/Versions/2.8.2/lib/libgdiplus.0.dylib
(compatibility version 1.0.0, current version 1.0.0)
	/Library/Frameworks/Mono.framework/Versions/2.8.2/lib/libglib-2.0.0.dylib
(compatibility version 2401.0.0, current version 2401.1.0)
…..

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