Error with 'begin editing on insert' fisrtResoponder


Here is a screen shot of my error:

I am not sure what I have done wrong here.
Project source:


The error message reads, “Receiver type ‘NSWindow’ for instance message does not declare a method with selector ‘makeFistResponder:’.”

The problem is that the method name is “makeFirstResponder:” (not Fist).


ha. of course. thanks!