Grbl post putting to many characters in one line

This dos not happen every time but some files i try to run the grbl post puts to many characters in a line any reason why?

Could this have something to do with the dxf file? It dos not do it all the time

What characters? Can you give an example?

For some reason the screen shot I have is to big to post? Anway the one line is G03X1002.8577Y645.5268Z0.OOOO1-0.0394J-3.2510F254 It jas done this before but only on certain files makes me think its tje .dxf file maybe?

sallys railing.tap (83.1 KB)
here is the tap file

What is the name of the post you are using? Could you send me a copy.