Print error when failing. Closes #118.
Print error when failing. Closes #118.

peteflorence/crazyflie-tools,blandry/crazyflie-tools,blandry/crazyflie-tools,blandry/crazyflie-tools,peteflorence/crazyflie-tools,peteflorence/crazyflie-tools,peteflorence/crazyflie-tools,blandry/crazyflie-tools