Hello,

I'm encountering some weird behavior when trying to update a view using  windowControllerDidLoadNib after loading in a persistent document.  
When I provide windowControllerDidLoadNib a single argument, as shown below (and required by the NSDocument class definition and in every example I've seen),
Xcode says: `windowControllerDidLoadNib:': wrong number of arguments (1 for 0) (ArgumentError)
If I don't provide any argument, it says: undefined method `windowControllerDidLoadNib' for #<MyDocument:0x200646660> (NoMethodError)
I've tried every combination of one or no args for both the method signature and "super" call on the next line, and I can't seem to get any different results.
This is my first time trying to get persistence going, but I've read a lot about it, and everything else is working well.. it saves and loads, but I can't seem to get this hook 
working to update the GUI upon loading.  


class MyDocument < NSDocument


attr_accessor :loadedmodel, :root #outlet to model field of controller

# Name of nib containing document window

def windowNibName

'MyDocument'

end

# Document data representation for saving (return NSData)

def dataOfType(type, error:outError)

outError.assign(NSError.errorWithDomain(NSOSStatusErrorDomain, code:-4, userInfo:nil))

NSKeyedArchiver.archivedDataWithRootObject(@root.model)

end


# Read document from data (return non-nil on success)

def readFromData(data, ofType:type, error:outError)

outError.assign(NSError.errorWithDomain(NSOSStatusErrorDomain, code:-4, userInfo:nil))

@loadedmodel = NSKeyedUnarchiver.unarchiveObjectWithData(data)

end


# Return lowercase 'untitled', to comply with HIG

def displayName

fileURL ? super : super.sub(/^[[:upper:]]/) {|s| s.downcase}

end


def windowControllerDidLoadNib(aController) 

super(aController)

@root.model = @loadedmodel

NSLog("model loaded")

end


end


Regards, 
 
    Tom Jordan