Docker image load failed on mac, error is 'inv

Question

When I execute 'docker load file', something was wrong:

XXXdeMacBook-Pro:~ wuxinming$ sudo docker load -i crm_mysql-0.1.tar

invalid argument

XXXdeMacBook-Pro:~ wuxinming$ docker version

Client:
 Version:      1.12.0-rc2
 API version:  1.24
 Go version:   go1.6.2
 Git commit:   906eacd
 Built:        Fri Jun 17 20:35:33 2016
 OS/Arch:      darwin/amd64
 Experimental: true

Server:
 Version:      1.12.0-rc2
 API version:  1.24
 Go version:   go1.6.2
 Git commit:   a7119de
 Built:        Fri Jun 17 22:09:20 2016
 OS/Arch:      linux/amd64
 Experimental: true

The command works well on Windows and Linux, but not Mac.