Thanks Quinn - that is a relief! (also Thanks for that link!). So if I want to simply send this app for internal testing (without the Developer ID signature) to other Macs - is it still possible (without having to add each Mac to the provisioning profile first)? I think I don't quite understand the role of having a provisioning profile with Developer ID apps. If you can point to some reference that explain this - it would be useful. Thanks. Devendra.