mono Errors

[Leerance]

ho installato mono con

sudo apt-get install mono-devel

e poi

sudo apt-get install gtk-sharp2

M quando avvio l'applicazione

Missing method System.Type::op_Inequality(Type,Type) in assembly /usr/lib/mono/2.0/mscorlib.dll, referenced in assembly /usr/lib/mono/gac/gtk-sharp/2.12.0.0__35e10195dab3c99f/gtk-sharp.dll

Unhandled Exception: System.MissingMethodException: Method not found: 'System.Type.op_Inequality'.
  at WepCrackGtk.MainWindow..ctor () [0x00000] in <filename unknown>:0
  at GWepCrackGui.MainClass.Main (System.String[] args) [0x00032] in /home/chris/Projects/wepcrackgui/GWepCrackGui/Main.cs:35
[ERROR] FATAL UNHANDLED EXCEPTION: System.MissingMethodException: Method not found: 'System.Type.op_Inequality'.
  at WepCrackGtk.MainWindow..ctor () [0x00000] in <filename unknown>:0
  at GWepCrackGui.MainClass.Main (System.String[] args) [0x00032] in /home/chris/Projects/wepcrackgui/GWepCrackGui/Main.cs:35


per avviare l'applicazione devo dare

mono --runtime=v4.0 GWepCrackGui.exe

Posso risolvere?

3.2.0-33-generic BackBox v3.0 32 bit

[ZEROF]

Check this http://winquire.org/2012/04/12/ubuntu-removes-default-mono-support-in-12-04-dont-worry-though-you-can-still-easily-get-it-back/