I have a form1 with 31 controls based on table1. I have a popup form (not a subform) being used as a multi-select combo box to fill additional fields as needed in table1. While troubleshooting, I copied 2 controls from popup form to form1.Now that everything works, I can delete one of the copied controls-everything still works. If I delete the other control on form1, the corresponding control on popup form no longer works. I receive error "can't find the field referred to in your expression"- the reason being that at some point a space was included in the field name or in an expression. Now I cannot make the correction- I've tried correcting the spelling error in the table as well as changing the expression in the form and nothing works. As a workaround I can give the control a 0" 0" size position but I'd rather learn to fix the error. Can you help?