Crashed when load node in launch file?

[littleggghost]

Hi, @awinkler
I followed your "xpp_examples/src/monoped_pub.cc" and build a new file named "xpp_examples/src/biped_pub.cc" with "RobotStateCartesian hopper(2)". I'm sure that I modified correct "CMakeLists.txt" file and add correct launch file.

If I load this node not in launch file, then it works fine.
But if I load this node in launch file, then it would crashed.
The full error code: "rviz: /build/ogre-1.9-mqY1wq/ogre-1.9-1.9.0+dfsg1/OgreMain/src/OgreNode.cpp:385: virtual void Ogre::Node::setOrientation(const Ogre::Quaternion&): Assertion `!q.isNaN() && "Invalid orientation supplied as parameter"' failed."

Did I miss something?
Hope for your reply!