I have a form with a single DataGridView which has 2 
DataGridViewTextBoxColumns named "Column1" and "Column2".

* In WinRes the grid is shown WITHOUT any columns
* Clicking the  AddColumns button opens the add column popup which defaults 
to a unbound new column name of "Column2"
* The Type combo on this popup is empty
* Clicking the Add button generates an excpetion handlign message box - the 
exception is "Object refernce not set to an instance of an object"

I am guessing that WinRes cannot "see" the type definition for 
DataGridViewTextBoxColumn (even though System.Windows.Forms is on the GAC)

Any ideas ?