Error when catkin_make is run

[rahulmdh]

make[2]: *** [tum_simulator/cvg_sim_gazebo_plugins/CMakeFiles/hector_gazebo_quadrotor_state_controller.dir/src/quadrotor_state_controller.cpp.o] Error 1
make[1]: *** [tum_simulator/cvg_sim_gazebo_plugins/CMakeFiles/hector_gazebo_quadrotor_state_controller.dir/all] Error 2
make: *** [all] Error 2
Invoking "make -j8 -l8" failed

I am using ROS Indigo and Gazebo 7. I have looked at many answers and it seems Gazebo 7 works well with Indigo. I found a similar problem faced by someone else and he suggested to do the following changes to make it work with Indigo. tum-vision/tum_simulator#8
I edited all the header and cpp files as mentioned but still it's not working. Please help.