OK, I'll start by saying I know this is ridiculous. I have a split form that overlays a table. One of the fields is called MS5, a text field. I need to have a combo box cover that field, in order to control inputs. If I do so, the data in the field becomes "invisible", and sorting by that field yields "type mismatch." If I remove the combo box, and use a text box, everything is fine, works correctly, data is visible, but I cannot then control the inputs.
I have created them both "by hand" and using the wizard, with the same results.
This form has several combo boxes. None have this issue.
It has to be something ridiculously simple.
Using access 2007
Thanks for your suggestions.