Matlab Ros communication with Virtual Box

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I've ROS on Vitual Box and Matlab on OS X. I connected them through a port and when I do rosinit, rosined list, rostopic list Matlab works without problem whit topics and node of ROS. When I do rostopic echo /topic name/ Matlab says "the class 'robotics.ros.Subscriber' contains a parse error, cannot be found on MATLAB's search path, or is shadowed by another file with the same nam" and ROS "couldn't find an AF_INET address for /hostname/" But the port it's ok because other function works.Thanks for the help