Hi, As suggested, I added both com.apple.security.cs.allow-dyld-environment-variables  and com.apple.security.cs.disable-library-validation entitlements. Both are set for the main bundle but checked that they are also present for the embedded bundle while auxiliary binaries have the com.apple.security.inherit entitlement. Unfortunately enough the problem is still present. I will be in travel until the end of the month but when I will be back I am ready for a DTS tech support incident. However, since most of the contents of the App are generated by MatLab, I really don't know how to produce a small test App. All the best Alain

I don't know if this can be of any help to others but I got the same stapling "error 65" in the following case I created a DMG containing a classical bundle "myTest.app" I successfully notarized the .dmg file I got the "Error 65" when trying to staple it. Processing: /Users/xxxx/Development/myTest_Install.dmg CloudKit query for myTest_Install.dmg (2/aaf85e0a1c60c86705e9a8880ebe1ad4cd32bf56) failed due to "Record not found". Could not find base64 encoded ticket in response for 2/aaf85e0a1c60c86705e9a8880ebe1ad4cd32bf56 The staple and validate action failed! Error 65. I ultimately found was that the error was due "myTest.app" not being notarized !!!! Come on Apple, instead of an error message that only aliens can understand it would not be too difficult to give us something more helpful! All the best

I have the same problem right now. Any solution ?