Just to clarify, is your app installed on the destination Mac? Yes And if, on the destination Mac, you duplicate a .customxml in the Finder, does it do the right thing? Yes. In the "regular" way so the first duplicate is "... copy.customxml" and then subsequent are "... 2.customxml" And for further clarification, the first time the file is AirDrop'd, it has the correct extension and my App is invoked on the destination Mac. It's just the subsequent transfers of a file of the same name where I can see the file name is ".customxml 2" in the Downloads folder and my App is not invoked. I suspect there is nothing I can do about it, but it does seem weird and "wrong" to have Finder and AirDrop do different things. Thanks for your time.

OK done: FB9126563 Thanks.

Not working again. No change to macOS version nor Xcode version. Just back to these console messages: error 11:59:51.470396-0700 storeuid <ReceiptRefreshRequest: 0x1581c3ee0>: Error fetching receipt for com.moremobilesoftware.divelogdt - Error Domain=com.apple.commerce.server Code=1008 "(null)" default 11:59:51.471332-0700 storelegacy StoreLegacy: Failed to renew receipt for application at path /Users/jXXXXXXX/Library/Developer/Xcode/DerivedData/<Product>/Build/Products/Debug/DiveLogDT.app : 'The operation couldn’t be completed. (com.apple.commerce.server error 1008.)' Anyone else seeing it go back and forth and back and forth like this?

I also have this problem and filed FB11710852 with sample test App, copy and pasted from Apple's documentation. Was filed in Oct 2022 and no response. Also tried same Test App in Swift and get the same result. A message showing in the Console is: "[api] Attempt to write notes by an unentitled app" In a semi recent version of iOS, Apple requires a special additional entitlement for App's that want to update the Notes field of a Contact but as far as I know, this is not (yet) required for macOS App's right? Anyone have any updates?