Mach3 problem

I have two computers with Mach3 mill ver 3.00 . The code below runs fine in Mach3 in one computer but not in the other. In the computer set up on my mill I get a flashing "abnormal condition" light. The code is fine. What is causing this in Mach3??? I assume something is set differently but don't have a clue where to look.

Jack


G00 G49 G40.1 G17 G80 G50 G90 G64
G20
(Standard Drill )
M6 T1
M03 S4583
G00 Z0.1250
X2.0000 Y0.2810
G81 X2.0000 Y0.2810 Z-0.6722 R0.1 F4.0
G80
G00 Z0.1250
G81 X0.5000 Y0.2810 Z-0.6722 R0.1 F4.0
G80
G00 Z0.1250
(2 1/2 Axis Pocketing)
M6 T2
M03 S4583
X1.2737 Y0.7375
G01 Z0.0292 F10.0
Z0.0042 F6.0
X1.2723 Y0.7383 Z0.0039 F4.0
X1.2656 Y0.7407 Z0.0026