Hi I'm having a problem running the following program. I'm not sure what the alarm refers to but it must be something I'm missing in the program as I tried other programs and they ran fine. Anyone have any ideas? It's a program to pilot drill a bot hole pattern and I know there are better ways of writing the program but I couldn't get any to work..

o5000(---PCD Pilot Drill---)

G21 G90
S1500
M03
G01 X501 Y0 Z58.8
G01 F300 X518.66032123 Y54.35287991
G91
G01 F60 Z-5
G01 F60 Z10
G90
G01 F300 X558.15 Y0
G91
G01 F60 Z-10
G01 F60 Z10
G90
G01 F300 X518.66032123 Y-54.35287991
G91
G01 F60 Z-10
G01 F60 Z10
G90
G01 F300 X454.76467877 Y33.59192717
G91
G01 F60 Z-10
G01 F60 Z10
G90
G01 F300 X454.76467877 Y-33.59192717
G91
G01 F60 Z-10
G01 F60 Z10

G90
G01 X501 Y0 Z150
M05