I created a collada mesh (Floorplan.dae) which drives gazebo crazy. It is loadable and gazebo does not crash, but when I spawn a TurtleBot on it, the TurtleBot gets twisting wheels and is hovering and hopping around.
Here are some more details: http://answers.gazebosim.org/question/14591/why-does-my-custom-collada-mesh-makes-the-turtlebot-wheels-twist/
I am using Gazebo 7.0.0 with ROS Kinetic under Ubuntu 16.04 LTS.
The collada file in question is attached.