Thanks for the update Brinzlee,
Now things are clearer. As I suggested earlier, probably a test in progress and you just happened to do a download at the 'wrong' time. I was beginning to think I was going crazy. As Lee says, as you are running 20160511 (the latest 'official' release), auto-update should work fine when the new update becomes available. It might be safer not to run the version you downloaded in case it hasn't been finalised.
Regards
Peter