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Hi , I just had the same error also with indigo, I fixed it by adding a "uint16_t rpms; " definition to the vx11_laser.cpp file and then it gave an error in the publisher file which i got around by commenting out the line " // rpms.data=laser.rpms; " after that the catkin_make worked ok. then had to run sudo su to let rosrun to be found and allow the ttyUSB0 port to be opened. Laser scan now displaying in rviz ! Im not a SW eng and its a bit of a hack, the rpm data is most likley not critical anyway , hope it works for you.