I'm trying to connect to MySQL, using Sequel Pro, something I have done many times before. Host 127.0.0.1, username root, no password. I get the following message:
Unable to connect to host 127.0.0.1 because access was denied.
Double-check your username and password and ensure that access from your current location is permitted.
MySQL said: Access denied for user 'root'@'localhost' (using password: NO)
For what it's worth, I got this message after upgrading to a new Mac OS (Mavericks), realized that the server wasn't running, downloaded a new server (which is currently running), and tried again - but I had the same problem.