my dear Friend you must write it
G3 x45 y0 i48 j3 like it the master cam collect it use the zero point of circle you draw but this wrong with the machine you must give it the zero and add the line dimntion so try to use LIGHT cnc post process in the mastercam web site as it and send me your post process i will show it and told you what is errors

hope i help you dear any thing in the machine told me