Thanks for feed back. Not sure it is a bug, but this is very subtle and not described (or at least could not find the doc). Could file a bug against documentation at least.

Does it behaves so only in your app ? Or also in other apps ? If only in your app, you should give more details and show relevant code.

I am pretty sure it will work without a xib. xib solution must work, but you need to manage topLevelObjects. Which is not totally immediate…

What alignment are you exactly looking for ? Center to what ? To center in its frame: Image("Sacropped_image") .resizable() .scaledToFit() .frame(width: 240, height: 250, alignment: .center) .border(Color.red, width: 4)

I have tried to use your code. Could not figure out how to use ut. And could not crash it either. Could you show the exact and complete crash log ? I would not be surprised that index out of range is value 0 (which means voti2 is an empty array). But your code is surprising. I see nowhere any item appended to voti2. For sure, voti2 set to tutto() But func tutto() - [Float] { returns voti2 without appending any element. So, when you write voti2 = tutto(), you copy voti2 into voti2 …

Could you show the code you have tried, with a state var for each list ?

That will avoid the crash. But the real point is to check if voti2.count is ever more than zero. If not, that confirms there is a design flaw. This is what must be corrected. Note: in anycase, it is a effectively good practice to check index values are within bounds. A very simple extension may even simplify writing extension Array { func isValidIndex(_ index: Int) - Bool { return index = 0 && index self.count } } Then if(mediaEffettiva mediaFloat && voti2.count = con+1 && con = 0) { voti2[con] += 0.5 } becomes a bit shorter if mediaEffettiva mediaFloat && voti2.isValidIndex(con) { voti2[con] += 0.5 }

Could you show the code where you add layer to tableView cell ?

You should manage each scroll position in a State var. Have a look here for example: https://stackoverflow.com/questions/56503243/get-the-current-position-of-scrollview-in-swiftui

@blackstreet23 Not sure I understand what you want… If you tap in the file browser panel (at the leftmost of Xcode), but not selecting a file to edit its name, and then start typing a name as app, you'll go to the first file of this name, such as appDelegate.

I changed as floors, and it works here. layer must be added to cell.contentView. I set the layer in cellForRowAt func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) - UITableViewCell { let cell = tableView.dequeueReusableCell(withIdentifier: "CellItem2", for: indexPath) let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) if filtered { cell.textLabel?.text = filteredData[indexPath.row] } else { cell.textLabel?.text = collectionEintraege[indexPath.row] } let layer = CAGradientLayer() layer.frame = cell.bounds.insetBy(dx: 4, dy: 4) // CGRect(x: 0, y: 0, width: 500, height: 40)         layer.colors = [UIColor(red: 0.19, green: 0.22, blue: 0.25, alpha: 1.00).cgColor, UIColor(red: 0.25, green: 0.26, blue: 0.28, alpha: 1.00).cgColor] layer.borderWidth = 1 layer.borderColor = UIColor.white.cgColor cell.contentView.layer.addSublayer(layer) // -- That's the key cell.textLabel?.textColor = UIColor.white cell.textLabel?.font = UIFont(name: "Helvetica", size: 25.0) return cell }

I did some more test, to check how to use topLevelObjects. I replaced IBOutlets by simple properties. It works well in Xcode, but crashes the same in Finder. But I do think that's the direction to look at. final class KaraokeSongView: NSView { var rootView: NSView! var songTitleView: NSTextField! var currentTimeView: NSTextField! var songLengthView: NSTextField! var songPositionView: NSProgressIndicator! var playPauseButton: NSButton! var dragDestination: KaraokeSongDragDestinationView! var unpackProgress: NSProgressIndicator! var showInFinder: NSButton! var songDisplayView: NSImageView! var songVideoView: AVPlayerView! var volumeSlider: NSSlider! var songUrl: URL! var player = AVAudioPlayer() var avPlayer = AVPlayer() let formatter = DateComponentsFormatter() var currentCdgPacket = 1.0 var timer: Timer! var myArray : NSArray? required init?(coder: NSCoder) { super.init(coder: coder) let myName = type(of: self).className().components(separatedBy: ".").last! if let nib = NSNib(nibNamed: myName, bundle: Bundle(for: type(of: self))) { nib.instantiate(withOwner: self, topLevelObjects: &myArray) // nil) print("myArray count", myArray?.count) print("myArray[0]", myArray![0]) print("myArray[1]", myArray![1]) if let topView = myArray![0] as? NSView { print("topView 0", topView, topView.frame) for newView in topView.subviews { self.addSubview(newView) print("newView", type(of: newView), newView.frame) } } else if let topView = myArray![1] as? NSView { print("topView 1", topView, topView.frame) for newView in topView.subviews { self.addSubview(newView) print("newView", type(of: newView), newView.frame) } } // setup() } else { print("init couldn't load nib") } } myArray contains 2 objects: NSApplication and the top NSView But in any order, hence the need to test [0] and [1]. Here the output, showing we get all the objects. And some errors at the beginning. We should now need to connect to properties in the class. 2021-03-14 17:09:02.287271+0100 BugCode[50871:3973074] CDN - client insert callback function client = 0 type = 17 function = 0x7fff322a4246 local_olny = false 2021-03-14 17:09:02.287323+0100 BugCode[50871:3973074] CDN - client setup_remote_port 2021-03-14 17:09:02.287352+0100 BugCode[50871:3973074] CDN - Bootstrap Port: 1799 2021-03-14 17:09:02.287502+0100 BugCode[50871:3973074] CDN - Remote Port: 41999 (com.apple.CoreDisplay.Notification) 2021-03-14 17:09:02.287545+0100 BugCode[50871:3973074] CDN - client setup_local_port 2021-03-14 17:09:02.287567+0100 BugCode[50871:3973074] CDN - Local Port: 24579 2021-03-14 17:09:02.292836+0100 BugCode[50871:3973128] [plugin] AddInstanceForFactory: No factory registered for id CFUUID 0x60000023f9c0 F8BB1C28-BAE8-11D6-9C31-00039315CD46 myArray count Optional(2) myArray[0] NSView: 0x100625a90 myArray[1] NSApplication: 0x6000035000b0 topView 0 NSView: 0x100625a90 (0.0, 0.0, 490.0, 340.0) newView NSSlider (448.0, 27.0, 24.0, 255.0) newView AVPlayerView (0.0, 0.0, 432.0, 280.0) newView NSImageView (0.0, 0.0, 432.0, 280.0) newView NSTextField (431.0, 292.0, 41.0, 16.0) newView NSTextField (18.0, 316.0, 416.0, 16.0) newView NSProgressIndicator (53.0, 289.0, 372.0, 20.0) newView NSButton (440.0, 0.0, 40.0, 25.0) newView NSBox (5.0, 286.0, 465.0, 5.0) newView NSTextField (6.0, 291.0, 41.0, 16.0) newView KaraokeSongDragDestinationView (0.0, 0.0, 490.0, 340.0) newView NSButton (438.0, 306.0, 49.0, 32.0) myArray count Optional(2) myArray[0] NSApplication: 0x6000035000b0 myArray[1] NSView: 0x10062b660 topView 1 NSView: 0x10062b660 (0.0, 0.0, 490.0, 340.0) newView NSSlider (448.0, 27.0, 24.0, 255.0) newView AVPlayerView (0.0, 0.0, 432.0, 280.0) newView NSImageView (0.0, 0.0, 432.0, 280.0) newView NSTextField (431.0, 292.0, 41.0, 16.0) newView NSTextField (18.0, 316.0, 416.0, 16.0) newView NSProgressIndicator (53.0, 289.0, 372.0, 20.0) newView NSButton (440.0, 0.0, 40.0, 25.0) newView NSBox (5.0, 286.0, 465.0, 5.0) newView NSTextField (6.0, 291.0, 41.0, 16.0) newView KaraokeSongDragDestinationView (0.0, 0.0, 490.0, 340.0) newView NSButton (438.0, 306.0, 49.0, 32.0) 2021-03-14 17:09:02.334430+0100 BugCode[50871:3973128] HALC_ShellDriverPlugIn::Open: Can't get a pointer to the Open routine 2021-03-14 17:09:02.371983+0100 BugCode[50871:3973074] Metal API Validation Enabled

I looked at doc for: func instantiate(withOwner owner: Any?, topLevelObjects: AutoreleasingUnsafeMutablePointerNSArray??) - Bool Parameters owner The object to set as the Nib’s owner (File’s Owner). topLevelObjects On return, an array containing the top-level objects of the nib. Return Value true if the nib is instantiated; otherwise false. Discussion Unlike legacy methods, the objects adhere to standard Cocoa memory management rules; it is necessary to keep a strong reference to the objects or the array to prevent the nib contents from being deallocated.  Outlets to top level objects should be strong references to demonstrate ownership and prevent deallocation. But you pass nil for topLevelObjects. Could you try changing to follow those requirements ? Some info here: https://stackoverflow.com/questions/41312945/instantiate-nsview-with-custom-objects-in-it-using-nsnib Other solution (I usually use): I do not declare IBOutlets I create objects in the NSView subclass and Draw them in draw() func.

What are the targets defined for the app ? 13 or 14 ? Does the crash occur on device, on simulator, on both ? I don't use SwiftUI in my code (besides maybe the SceneDelegate ? No, SceneDelegate has no link in itself to SwiftUI. When you defined the app, did you define as UIKit lifecycle ? Did you try an option-clean build folder ? Have you a file named chauffeur (either chauffeur.swift or chauffeur.xib) ? If so, please post code.

I get many errors in Xcode: 2021-03-14 13:39:24.562545+0100 BugCode[44764:3798589] CDN - client insert callback function client = 0 type = 17 function = 0x7fff322a4246 local_olny = false 2021-03-14 13:39:24.562599+0100 BugCode[44764:3798589] CDN - client setup_remote_port 2021-03-14 13:39:24.562627+0100 BugCode[44764:3798589] CDN - Bootstrap Port: 1799 2021-03-14 13:39:24.562771+0100 BugCode[44764:3798589] CDN - Remote Port: 23599 (com.apple.CoreDisplay.Notification) 2021-03-14 13:39:24.562812+0100 BugCode[44764:3798589] CDN - client setup_local_port 2021-03-14 13:39:24.562834+0100 BugCode[44764:3798589] CDN - Local Port: 23811 2021-03-14 13:39:24.578916+0100 BugCode[44764:3798626] [plugin] AddInstanceForFactory: No factory registered for id CFUUID 0x60000024c1e0 F8BB1C28-BAE8-11D6-9C31-00039315CD46 2021-03-14 13:39:24.636908+0100 BugCode[44764:3798626]  HALC_ShellDriverPlugIn::Open: Can't get a pointer to the Open routine You have defined KaraokeSongDragDestinationViewDelegate But no-one conforms to it. Is it because you have just ket a bug-report part of code ? Note: I was also missing the "icon_play" but replaced by another image.