``class pInfoViewController: NSViewController, NSTableViewDataSource, NSTableViewDelegate {     @IBOutlet var infoTable : NSTableView!     var artists = artistModel() @IBAction func tableViewDoubleAction(sender: AnyObject)   {         let r = infoTable.clickedRow            aPainterWindow = painterWindow(windowNibName: "painterWindow")                 aPainterWindow.setPainter(ID:artists.patienterNID(index:r))         aPainterWindow.showWindow(self)     }     @IBAction func painterClicked(sender : Any)   {         let r = infoTable.clickedRow                    let painterID = artists.patienterNID(index: r)         print("load paintings for painterID = (painterID).")           NotificationCenter.default.post(name: NSNotification.Name(rawValue: "loadPaintingsForPainter"), object: painterID )     }     func reloadDataAndTable()     {         artists.loadAllPainters()         self.infoTable.reloadData()     }     override func viewDidLoad()     {         super.viewDidLoad()         reloadDataAndTable()     }     func tableView(_ tableView: NSTableView, viewFor tableColumn: NSTableColumn?, row: Int) -> NSView?     {         let cell = tableView.makeView(withIdentifier: NSUserInterfaceItemIdentifier(rawValue: "Painter"), owner: self) as? NSTableCellView         cell?.textField?.stringValue = artists.itemN(index:row)         print("piv row=(row). value= (artists.itemN(index:row)).")         return cell     }         func numberOfRows(in aTableView: NSTableView) -> Int       {       return artists.nItems() } }.` `

Thanks! What a life saver. Here we are in Xcode 13.3 and this still happens. Pulled out some hair on this one.

It seems that the answer is that you have to both add an entity and set the entities parent to make it visible; content.add(anchorEntity) anchorEntity.setParent(content) modelEntity.setParent(content)

Start with the basic volumetric app in Xcode. Look here for an example; https://stackoverflow.com/questions/78265212/how-to-display-3d-map-in-realitykit In that example the placed the view over a cylinder, but you can use a box like the example you linked to. You can add whatever you want to the sides of the box. This should get you started.

Thanks. It gave up after about 30 hours and said try again!

Still happening with 15.3.1. No betas either.

Thanks. I did, in fact, use object detection instead of tracking.

This happens to me when my project is on an external disc and there is a problem with the disc. Remounting the disc will solve the problem, but Xcode will have to be force quit before you can go on.