Can anyone help me figure out what I have done wrong here.

If you open the form named frm_EndWk in the file dated 2010.11.12. You'll see that the combo box in the subform works correctly. I recreated this same type of form in the file dated 2010.11.13. The form is called frm_Plan2Wk. The subform with the combo box is not working correctly. It keeps requesting a value for the key field in tbl_Out_Prp.



I have looked through both files and can find nothing different that seems like it would cause the first one to work and the second one not to work.