Ok, here is a snipit, but I don't think the code is the problem. When I load it Mach removes all the line numbers.

N0000 (Filename: driver pattern.tap)

N0010 (Post processor: Mach2.post)

N0020 (Date: 1/30/2010)

N0030 G20 (Units: Inches)

N0040 G40 G90

N0050 F1

N0060 (Part: Driver Pattern)

N0070 (Process: Inside offset CUT2, 1/2" Ball nose, 0.375 in Deep)

N0080 G00 Z0.5000

N0090 X0.0000 Y0.0000

N0100 (1/2" Ball nose)

N0110 T225 M06 G43 H225

N0120 M03 S20000

N0130 G00 X0.0000 Y0.0000 Z0.5000

N0140 X5.5150 Y4.5000

N0150 Z0.0197

N0160 G01 Z0.0000 F50

N0170 G03 X5.5073 Y4.6247 Z-0.1250 I-1.0150 J0.0000

N0180 X5.5150 Y4.5000 I-1.0073 J-0.1247 F25.0

N0190 X5.5073 Y4.6247 Z-0.2500 I-1.0150 J0.0000 F50.0

N0200 X5.5150 Y4.5000 I-1.0073 J-0.1247 F25.0

N0210 X5.5073 Y4.6247 Z-0.3750 I-1.0150 J0.0000 F50.0

N0220 X5.5073 Y4.6247 I-1.0073 J-0.1247 F25.0

N0230 G00 Z0.2500