I am trying to perform euclidean cluster extraction under Ubuntu 12.04/11.10 (getting this error on both versions) and ROS Fuerte. The code for the clustering is below:

pcl::search::KdTree<pcl::PointXYZ>::Ptr tree ( new pcl::search::KdTree<pcl::PointXYZ>() );
tree->setInputCloud( input_point_cloud.makeShared() );
std::vector<pcl::PointIndices> *cluster_indices ( new std::vector<pcl::PointIndices>() );
std::vector<pcl::PointCloud<pcl::PointXYZ> > output_object_candidates; 

pcl::EuclideanClusterExtraction<pcl::PointXYZ> ec;
ec.setClusterTolerance( 0.01 ); // 2cm
ec.setMinClusterSize( 10 );
ec.setMaxClusterSize( 25000 );
ec.setSearchMethod( tree );
ec.setInputCloud( input_point_cloud.makeShared() );
ec.extract( *cluster_indices );

this leads to the following segmentation fault (with GDB 'bt' output):

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff36b11f4 in flann::KDTreeSingleIndex<flann::L2_Simple<float>   >::buildIndex() () from /opt/ros/fuerte/lib/libpcl_kdtree.so.1.5
(gdb) bt
#0  0x00007ffff36b11f4 in flann::KDTreeSingleIndex<flann::L2_Simple<float> >::buildIndex() () from /opt/ros/fuerte/lib/libpcl_kdtree.so.1.5
#1  0x00007ffff36a2938 in pcl::KdTreeFLANN<pcl::PointXYZ, flann::L2_Simple<float> >::setInputCloud(boost::shared_ptr<pcl::PointCloud<pcl::PointXYZ> const> const&,   boost::shared_ptr<std::vector<int, std::allocator<int> > const> const&) () from  /opt/ros/fuerte/lib/libpcl_kdtree.so.1.5
#2  0x00007ffff70b718f in pcl::search::KdTree<pcl::PointXYZ>::setInputCloud(boost::shared_ptr<pcl::PointCloud<pcl::PointXYZ> const> const&, boost::shared_ptr<std::vector<int, std::allocator<int> > const> const&) () from /opt/ros/fuerte/lib/libpcl_filters.so.1.5
#3  0x00007ffff63ee337 in object_candidate_extraction::extract_object_candidates (this=0x7fffffffdc10, input_point_cloud=..., object_candidates=...)
at /home/badrobit/ros_workspace/RoboCupAtWork/raw_object_perception/raw_safe_object_transportation/common/src/object_candidate_extraction.cpp:27
#4  0x0000000000450b9b in safe_object_transportation_node::get_point_cloud_data (this=0x7fffffffdb40, input_point_cloud=...)
at /home/badrobit/ros_workspace/RoboCupAtWork/raw_object_perception/raw_safe_object_transportation/ros/nodes/safe_object_transportation.cpp:54
#5  0x00000000004678d3 in boost::_mfi::mf1<void, safe_object_transportation_node, boost::shared_ptr<sensor_msgs::PointCloud2_<std::allocator<void> > const> const&>::operator() (
this=0x7fffe4000ca8, p=0x7fffffffdb40, a1=...) at /usr/include/boost/bind/mem_fn_template.hpp:165
#6  0x0000000000465665 in boost::_bi::list2<boost::_bi::value<safe_object_transportation_node*>, boost::arg<1> >::operator()<boost::_mfi::mf1<void, safe_object_transportation_node, boost::shared_ptr<sensor_msgs::PointCloud2_<std::allocator<void> > const> const&>, boost::_bi::list1<boost::shared_ptr<sensor_msgs::PointCloud2_<std::allocator<void> > const> const&> > (
this=0x7fffe4000cb8, f=..., a=...) at /usr/include/boost/bind/bind.hpp:313
#7  0x0000000000462d4e in boost::_bi::bind_t<void, boost::_mfi::mf1<void, safe_object_transportation_node, boost::shared_ptr<sensor_msgs::PointCloud2_<std::allocator<void> > const> const&>, boost::_bi::list2<boost::_bi::value<safe_object_transportation_node*>, boost::arg<1> > >::operator()<boost::shared_ptr<sensor_msgs::PointCloud2_<std::allocator<void> > const> > (
this=0x7fffe4000ca8, a1=...) at /usr/include/boost/bind/bind_template.hpp:47
#8  0x0000000000460797 in boost::detail::function::void_function_obj_invoker1<boost::_bi::bind_t<void, boost::_mfi::mf1<void, safe_object_transportation_node, boost::shared_ptr<sensor_msgs::PointCloud2_<std::allocator<void> > const> const&>, boost::_bi::list2<boost::_bi::value<safe_object_transportation_node*>, boost::arg<1> > >, void, boost::shared_ptr<sensor_msgs::PointCloud2_<std::allocator<void> > const> const&>::invoke (function_obj_ptr=..., a0=...) at /usr/include/boost/function/function_template.hpp:153
#9  0x00000000004659fb in boost::function1<void, boost::shared_ptr<sensor_msgs::PointCloud2_<std::allocator<void> > const> const&>::operator() (this=0x7fffe4000ca0, a0=...)
at /usr/include/boost/function/function_template.hpp:1013
#10 0x0000000000462efd in boost::detail::function::void_function_obj_invoker1<boost::function<void (boost::shared_ptr<sensor_msgs::PointCloud2_<std::allocator<void> > const> const&)>, void, boost::shared_ptr<sensor_msgs::PointCloud2_<std::allocator<void> > const> >::invoke(boost::detail::function::function_buffer&, boost::shared_ptr<sensor_msgs::PointCloud2_<std::allocator<void> > const>) (function_obj_ptr=..., a0=...) at /usr/include/boost/function/function_template.hpp:153
#11 0x000000000046cfd4 in boost::function1<void, boost::shared_ptr<sensor_msgs::PointCloud2_<std::allocator<void> > const> >::operator() (this=0x7fffe4000c58, a0=...)
at /usr/include/boost/function/function_template.hpp:1013
#12 0x000000000046ca5a in ros::SubscriptionCallbackHelperT<boost::shared_ptr<sensor_msgs::PointCloud2_<std::allocator<void> > const> const&, void>::call (this=0x7fffe4000c50, params=...)
at /opt/ros/fuerte/include/ros/subscription_callback_helper.h:180
#13 0x00007ffff7b880f7 in ros::SubscriptionQueue::call() () from /opt/ros/fuerte/lib/libroscpp.so
#14 0x00007ffff7b39f09 in ros::CallbackQueue::callOneCB(ros::CallbackQueue::TLS*) () from /opt/ros/fuerte/lib/libroscpp.so
#15 0x00007ffff7b3b9ab in ros::CallbackQueue::callAvailable(ros::WallDuration) () from /opt/ros/fuerte/lib/libroscpp.so
#16 0x00007ffff7b8b948 in ros::SingleThreadedSpinner::spin(ros::CallbackQueue*) () from /opt/ros/fuerte/lib/libroscpp.so
#17 0x00007ffff7b7063b in ros::spin() () from /opt/ros/fuerte/lib/libroscpp.so
#18 0x000000000044e359 in main (argc=1, argv=0x7fffffffdd28)
at /home/badrobit/ros_workspace/RoboCupAtWork/raw_object_perception/raw_safe_object_transportation/ros/nodes/safe_object_transportation.cpp:187

I have been trying to figure this error out for a while now to no avail. I am not sure if going to an experimental branch of PCL will solve this or not. I have followed the PCL tutorial as closely as possible as well as looking through their FAQ and wasn't really able to find any answers. Any help would be greatly appreciated.