'System.Resources.MissingManifestResourceException' in mscorlib.dll

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C#

Hello to everybody.
I have a question.
When I create a new Form project in Visual Studio 2010 Professional by Wizard
and I use some Image in controls like this:

this.button1.Image = global::WindowsFormsApplication1.Properties.Resources.Image1;

when I launch the project the application thrown an Exception

System.Resources.MissingManifestResourceException' in mscorlib.dll

in "Resources.Designer.cs"

internal static System.Drawing.Bitmap Image1 {
    get {
        object obj = ResourceManager.GetObject("Image1", resourceCulture);
        return ((System.Drawing.Bitmap)(obj));
    }
}

Can someone help me ??
Thankyou in advice