Issue with Setting target font name

With Excel 2000, I had written a double click code that included the following code snippet

                With Target
                    .Value = "NA"
                    .Font.Name = "Arial"
                    .Offset(0, 1).Value = Application.UserName
                    .Offset(0, 2).Value = Now
         End With

With Excel 2010, I get the following error "Runtime error 1004. Unable to set the name property of the font class" and it debugs to the font.name line. It correctly puts in the value. Can I no longer directly assign the font from target within an event macro? Thanks in advance.