I installed docker-machine 0.1.0 and docker-compose 1.1.0 on Mac OS 10.8.5.
Docker-machine is running normally and able to connect by docker-machine ssh.
When you get an Error:
ERROR: Couldn't connect to Docker daemon at http+docker://localhost - is it running?
The Solution would be:
First, try verifying Docker Service is Up and Running as expected on your remote/local machine:sudo service docker status
if Not - run sudo service docker start
or sudo systemctl start docker
(depends on some linux versions, see Docker get started instructions).
Second, start docker as sudo sudo docker-compose up