[NTG-context] Updating ConTeXt standalone problem on Mac OS X

Hello ConTeXist I have a problem with updating ConTeXt on my Mac OS X (El Captain). When you run the update script to me an error message appears, which surprises me, since I logged on as the system administrator. Can anyone advise me on what could be the problem. I note that I am a beginner on OS X. Here is problematic report: Jaroslav-MacBook-Air:context hajtmar$ sh first-setup.sh receiving file list ... done rsync: failed to set times on "/Users/hajtmar/context/bin": Operation not permitted (1) bin/ rsync: mkstemp "/Users/hajtmar/context/bin/.luatex.y7B2Zy" failed: Permission denied (13) etc.... Thanx Jaroslav Hajtmar