I've got an NSTable where I've made one column to have a NSPopupButtonCell as 
its contents.

Depending on the object that relates to a particular row, I only want two of 
four possible values to be selectable in each row. 

I tried to achieve this by setting the Enabled binding of each NSMenuItem in 
the cell to be bound to the Array Controller, with controller key 
arrangedObjects and a model key path to be a BOOL method on the objects in my 
table. However this blows up like this:

Unhandled Exception: Cannot create BOOL from object (
    0
) of class NSCFArray

How would I make it work?


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