(line 27939) Syntax warning: unsupported gcode command 'G2'

[JFinOP]

So converting gcode from S3d using ArcWelder gives these errors.

(line 27939) Syntax warning: unrecognised command word 'J'
(line 27939) Syntax warning: unsupported gcode command 'G2'
(line 27943) Syntax warning: unrecognised command word 'I'
(line 27943) Syntax warning: unrecognised command word 'J'
(line 27943) Syntax warning: unsupported gcode command 'G2'
(line 28098) Syntax warning: unrecognised command word 'I'
(line 28098) Syntax warning: unrecognised command word 'J'
(line 28098) Syntax warning: unsupported gcode command 'G2'
(line 28113) Syntax warning: unrecognised command word 'I'
(line 28113) Syntax warning: unrecognised command word 'J'
(line 28113) Syntax warning: unsupported gcode command 'G2'

GPX completes the conversion though.