>>Could there be any other object overlapping it?
>Not any. If I just do not assign the ControlSource it is enabled and works.
>
>Nick

I've seen this one too. Check your data environment. Do you possibly have more than 1 table or using a view? It happened to me using 2 tables and the objects NOT associated with the initia lselected alias are disabled. I'm sure the 'Fox Pro's' will elaborate the cause of this and the remedy.

Jon