I'd like to build off of hand_interaction in mit_ros_pkg in order to recognize a form of sign language with the Kinect.

I installed electric this morning and then checked out mit_ros_pkg/trunk.

After I checked out motion_planning_common/trunk, everything compiled fine.

I ran roslaunch hand_interaction finger_detector.launch and the hands (but !fingers) are detected successfully for a bit

detectskelhands: /usr/include/eigen3/Eigen/src/Core/Block.h:278: Eigen::Block<XprType, BlockRows, BlockCols, InnerPanel, true>::Block(XprType&, typename Eigen::internal::traits<Eigen::Block<XprType, BlockRows, BlockCols, InnerPanel, true> >::Index) [with XprType = Eigen::Matrix<float, 3, 3, 0, 3, 3>, int BlockRows = 3, int BlockCols = 1, bool InnerPanel = true]: Assertion `(i>=0) && ( ((BlockRows==1) && (BlockCols==XprType::ColsAtCompileTime) && i<xpr.rows()) ||((BlockRows==XprType::RowsAtCompileTime) && (BlockCols==1) && i<xpr.cols()))' failed.
got hand -0.34, -0.482697, 1.026878 [handdetector-7] process has died [pid 10192, exit code -6].

I got this with the debug compile flag and launch-prefix="xterm -e gdb" added to the .launch file

I see other people have had similar errors that were attributed their pcl version. But electric has pcl 1.1 right?

So is it my .launch file? Or because mit_ros_pkg isn't compatible with electric yet? Or some other reason entirely?

Should I just go read up on linear algebra?