I'm trying some alternatives because ReplicatorG is cranky and VERY slow to generate gcode.

Has anyone got Cura working? I'm getting errors like this:

Changing monitoring state from 'Offline' to 'Opening serial port'
Connecting to: /dev/cu.usbmodemfd121 with baudrate: 115200 (fallback)
Connected to: Serial<id=0x1064b85d0, open=True>(port='/dev/cu.usbmodemfd121', baudrate=115200, bytesize=8, parity='N', stopbits=1, timeout=3, xonxoff=False, rtscts=False, dsrdtr=False), starting monitor
Changing monitoring state from 'Opening serial port' to 'Detecting baudrate'
Trying baudrate: 250000
Send: M105
Unexpected error while reading serial port: SerialException: 'device reports readiness to read but returned no data (device disconnected?)' @ machineCom.pyo:_readline:516
Changing monitoring state from 'Detecting baudrate' to 'Error: SerialException: 'device reports re...'
Connection closed, closing down monitor