Sorting an NSTableView by code

FROM : Drarok Ithaqua
DATE : Fri Jun 30 01:35:56 2006

First, apologies if this was answered recently. I'm sure there was 
something at least similar, but I'm not seeing it in the archive...

I'm loading a whole load of files into an NSArrayController (each 
file is represented by an NSDictionary).
I can load, and display, all the data fine. But I'd like to 
automatically present it sorted after the load.
I've tried the following (and variants similar to the following) to 
no avail:

   NSSortDescriptor* sorter = [[NSSortDescriptor alloc] 
initWithKey:@"tvcArtist" ascending:YES];
   [trackController setSortDescriptors:[NSArray arrayWithObject:sorter]];

tvcArtist is the Identifier set in IB against the tableView's column 
(tvc = Table View Column),
but I'm stuck - it doesn't sort. Nor does it if I call [tableView 
setSortDescrip....

Can someone point me in the right direction?

Many thanks,

  - Drarok