>I had this same problem when I added a checkbox to a grid at runtime. I have a picklist form class where, depending on a paramater passed to THISFORM.Init(), the user can select one record or multiple records.
>
>I ended up having to set both of these properties in THISFORM.Init():
>
>THISFORM.grdPickList.COLUMNS[x].chkRecordSelect.READONLY = .F.
>THISFORM.grdPickList.COLUMNS[x].chkRecordSelect.VISIBLE = .T.
>
>It took me forever to figure out it was the Visible property that was causing the problem.

Oh, obviously! :)