[Mono-winforms-list] Method not found: "System.Windows.Forms.ToolStripItem.Set_MergeAction"

[Iñigo]

I am using Ubuntu Feisty Fawn and i am trying to run an application 
compiled in Windows with .NET
Well, in other machine with the same version of ubuntu, the app runs ok, 
but i want to redistribute the app, and i want to know the necessary 
packages.
So i installed a fresh Feisty and im trying to run it.
At first I need the winforms 2 package and the 
Microsoft.VisualBasic.dll, ok, but after this I get an strange error 
(Method not found: "System.Windows.Forms.ToolStripItem.Set_MergeAction") 
, and i can't solve it.
 What can I do?