All management tools are missing (left tab on screenshot) and Data Import and Export menu options does nothing.
I have downloaded the official installation mysql-workbench-community-6.1.7-osx-i686 and tried installing multiple times, without success.
Newly created schemas work without issues and I can connect to the dababases.
I found the solution myself. Im posting it here to help others.
Press (i) on the connection box and then run "Configure local management.." completing all steps on the window that is opened. After that opening the connection will show the management tools and data import/export then works.
来源：https://stackoverflow.com/questions/25385288/mysql-workbench-mac-os-missing-management-tools-and-data-import-export