>Putting Alias.field as the column's control source did the trick. Any ideas as to why this isn't necessary in the first grid (and any other grids I've built using this class)??
>
>Thanks..........Rich
>

I wrote a FAQ on this one (Why non read-only grid behaves as read-only FAQ #25144) when we were debugging a weird problem with my colleague. Now I always recommend to use full name, because you may run into such weird problems. (if you somehow have variables as your grid columns, for example).