Program received signal SIGSEGV, Segmentation fault.
0x00007ffff74a2727 in Ogre::SceneNode::updateFromParentImpl() const () from /usr/lib/libOgreMain.so.1.9.0
(gdb) bt full
#0  0x00007ffff74a2727 in Ogre::SceneNode::updateFromParentImpl() const ()
   from /usr/lib/libOgreMain.so.1.9.0
No symbol table info available.
#1  0x00007ffff73b78a9 in Ogre::Node::_update(bool, bool) () from /usr/lib/libOgreMain.so.1.9.0
No symbol table info available.
#2  0x00007ffff74a24a0 in Ogre::SceneNode::_update(bool, bool) () from /usr/lib/libOgreMain.so.1.9.0
No symbol table info available.
#3  0x00007ffff73b780c in ?? () from /usr/lib/libOgreMain.so.1.9.0
No symbol table info available.
#4  0x00007ffff74a24a0 in Ogre::SceneNode::_update(bool, bool) () from /usr/lib/libOgreMain.so.1.9.0
No symbol table info available.
#5  0x00007ffff74750aa in Ogre::SceneManager::_updateSceneGraph(Ogre::Camera*) ()
   from /usr/lib/libOgreMain.so.1.9.0
No symbol table info available.
#6  0x00007ffff74856de in Ogre::SceneManager::_renderScene(Ogre::Camera*, Ogre::Viewport*, bool) ()
   from /usr/lib/libOgreMain.so.1.9.0
No symbol table info available.
#7  0x00007ffff7263bc1 in Ogre::Camera::_renderScene(Ogre::Viewport*, bool) ()
   from /usr/lib/libOgreMain.so.1.9.0
No symbol table info available.
#8  0x00007ffff743b93d in Ogre::RenderTarget::_updateViewport(Ogre::Viewport*, bool) ()
   from /usr/lib/libOgreMain.so.1.9.0
No symbol table info available.
#9  0x00007ffff743bf4d in Ogre::RenderTarget::updateImpl() () from /usr/lib/libOgreMain.so.1.9.0
No symbol table info available.
#10 0x00007ffff743b7f4 in Ogre::RenderTarget::update(bool) () from /usr/lib/libOgreMain.so.1.9.0
No symbol table info available.
#11 0x00007ffff741e9ef in Ogre::RenderSystem::_updateAllRenderTargets(bool) ()
   from /usr/lib/libOgreMain.so.1.9.0
No symbol table info available.
#12 0x00007ffff74669da in Ogre::Root::_updateAllRenderTargets() () from /usr/lib/libOgreMain.so.1.9.0
No symbol table info available.
---Type <return> to continue, or q <return> to quit---
#13 0x00007ffff7466ac0 in Ogre::Root::renderOneFrame() () from /usr/lib/libOgreMain.so.1.9.0
No symbol table info available.
#14 0x000000000098471c in ?? ()
No symbol table info available.
#15 0x0000000000000000 in ?? ()
No symbol table info available