Not registered as observer


#1

Hi: new to all this but having fun …old Cobol/Pl/i guy so quite a change…so …chapt 10 and now getting a message :cannot stop observing…not registered as observer …yet I seem to be re the code ??? obviously missed something…thanks in advance…great book


#2

Hi: found it! I had used the sopObserving method twice in the setEmployees method …wow you really have to be vigilant…now Edit Undo not working but I’m sure its the same type of thing…