sounds like the delegate isn't set so it don't know where to look for those or 
the delegate is set to the wrong object

-rags



> On Jul 31, 2015, at 4:17 PM, Rick Mann <rm...@latencyzero.com> wrote:
> 
> But I still get this at run time:
> 
> *** Illegal NSOutlineView data source (<NSViewController: 0x6080000c6740>).  
> Must implement outlineView:numberOfChildrenOfItem:, 
> outlineView:isItemExpandable:, outlineView:child:ofItem: and 
> outlineView:objectValueForTableColumn:byItem:

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