If you try to use the wspbuilder VS addin menu on a non english version of visual studio an error "Value does not fall within the expected range" (in french : "la valeur n'est pas comprise dans la plage attendue") occur.
After setting logging level to "verbose" in the configuration file, i saw that this error came from the property "BuildWindow" of the class "DTEHandler". Here, the name of the Build output panel is hard coded "Build".
On a french installation this panel's name is "Générer".
To workaround this problem, i added an output panel named "Buid" thanks to the folowing macro :
' Create a tool window handle for the Output window.
Dim win As Window = DTE.Windows.Item(EnvDTE.Constants.vsWindowKindOutput)
' Create handles to the Output window and its panes.
Dim OW As OutputWindow = win.Object
Dim OWp As OutputWindowPane
' Add a new pane to the Output window.
OWp = OW.OutputWindowPanes.Add("Build")
' Add a line of text to the new pane.
The error message doesn't appear anymore.