I have developed several custom themes for WordPress using Mamp, Phpmyadmin and Dreamweaver on a Mac and until now I have never had any problems. I started working on a new site yesterday and noticed the wordpress 3.8 update. I updated the site I was working on and several others at the same time. Everything seemed fine until I went to log in today and I get this error:
Cookies are blocked or not supported by your browser
Cookies are enabled and I have tried it in several different browsers but the same thing happens. I have tried commenting out lines 744 to 746 in the wp-login file containing the if else statement about testcookies but I just get a blank white screen after logging in.
The wierdest thing is that only some of my sites are effected whilst others are fine. I have tried all day to figure this out but I am totally stumped. Any help would be really appreciated.