Save Button missing

Save Button missing

I am using AD Manager plus, today when I want to take "Inactive Users" report I clicked "Add OU" link and the popup box opened, but after selecting the OU's I am not able to save the settings, the save or OK button is missing,
 
I tried in three browsers (IE, FIrefox and Chrome)
 
Please help ASAP
                New to ADManager Plus?

                  New to ADSelfService Plus?