ProcessRowInput not containing any Row data

I have a script component as a destination. I believe I'm doing something very simple, but for some reason, I'm not getting back any data.

When I just msgbox the data in Row.Address, I get nothing. If I msgbox Row.Address.toString, I get "Object reference not set to instance of an object."

Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer)
MessageBox.Show(Row.Address)
End Sub

I have Address as an input and output column in my script component setup. Any help? It seems like it's gotta be something simple, but I'm pulling my (little bit of) hair out to find it.

mmmm... think my problem is elsewhere. thanks anyways!