Error _BSMachError: (os/kern) invalid capability (20) after receiving remote notification on CloudKit record addition

Question

When I receive a remote notification on a record addition (didReceiveRemoteNotification called), I get the following error message:

_BSMachError: (os/

Answer 1

Had same issue. I was trying to present a custom view on top of a presented view controller of third party framework.

Resolved by moving the presentation logic to my view controller

Answer 2

Thank you very much, I had the same issue on swift

So I've resolved it by putting code in main thread

func alertAction() {
  dispatch_async(dispatch_get_main_queue()) {
    //perform code
  }
}

Answer 3

I just experienced this error. I was in a UIAlert Action block; when the block exited the error occurred (BTW the parent UIAlertViewController was created in a dispatch_async block so was I guess off main thread.

Anyway, I wrapped the action code itself in

dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{

       [self handleActionForElement:thisType];



    });

and error went away. Your mileage may vary!

Answer 4

For Swift 5, I ended up with:

func alertAction() {
  DispatchQueue.main.async {
     //perform code
  }
}