I have insert a date-and time picker control 6 and added it to a field by
giving the datasource of the picker then name of the field.
It all works perfect,but by opening the form I get the warning:
"Can't set value to Null when checkbox property=False"
When I say its okay, I can open the form and use the picker the way I want
it.
What have I done wrong and how can I repair it?

Laura