Since I just updated Docker to 1.1.0 I get:
Error response from daemon: client and server don\'t have same version (client : 1.13, server: 1.12) <
Error response from daemon: client and server don\'t have same version (client : 1.13, server: 1.12)
boot2docker delete
boot2docker init
worked for me. stop/start the deamon before and after that of course.