hokuyo dies in ros-gazebo, works in gazebo?

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I've just upgraded to ROS Jade and Gazebo 5.0 and am having problems with my robot model.

When I take out my lidar node, my world works with both $ gazebo myworld.world and $roslaunch mylaunch.launch where mylaunch wraps myworld.world. But when I add my hoyoyo lidar (as used to work in Indigo), it works with $ gazebo myworld.world but segfaults when I run gazebo through roslaunch. Any ideas?

Here's what I add to sdf for the lidar: <include> <uri>model://hokuyo</uri> <pose>0.45 0 0.45 0 0.15 0</pose> </include> <joint name="hokuyo_joint" type="revolute"> <child>hokuyo::link</child> <parent>chassis</parent> <axis> <xyz>0 0 1</xyz> <limit> <upper>0</upper> <lower>0</lower> </limit> </axis> </joint>