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unknown error handler name 'rosmsg'

This was a bug in genpy; it is fixed in 0.6.13.

Try upgrading:

sudo apt-get update && sudo apt-get upgrade

unknown error handler name 'rosmsg'

This was a bug in genpy; it is fixed in 0.6.13.

Try upgrading:

sudo apt-get update && sudo apt-get upgrade

Error opening serial: [Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'

Try adding yourself to the dialout group:

sudo adduser `whoami` dialout

and reboot (or reload permissions).

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