I installed the beta just today and tried out the actor animation stuff, which works for me (including the cafe world which uses the plugin). One thing though, when I exit from the application it spouts the following error:
Error in `gzclient’: double free or corruption (!prev)
…followed by a backtrace and memory map. Here’s the complete error output –
http://pastebin.com/5Q44QCj9
My PC setup – Xenial, ROS Kinetic, on Nvidia Titan X