2015-08-25 12:13:29 Tunnelblick[3826] The owner of /Users is 502, not 0
2015-08-25 12:13:29 Tunnelblick[3826] /Users is not secure
sudo chown root:admin /Users
sudo chmod 755 /Users
The first time you us "sudo", you will be asked for your password. Type it in and then press the "enter/return" key. Nothing will appear as you type, not even asterisk characters ("*").