Those are the Access wizards, evidently. I got your forms to work by - create a new database, import all objects and only the forms for MemCompSF. That form worked fine. So the problem lies in one of the other forms. You can import them one by one and see which one(s) gives the error. I had to change your OnCurrent code to use a different field name, not sure where Zoombox resides on the subform, or if it does - ?