Denford Software & Machines

I have wrote a simple example of a canned cycle to show students, its just putting a radius on th end of a bar, it works fine in both simulation and VR machine but it wont run on the real machine, it freezes just before its about to start the cutting cycles and needs cnt- alt- del to shut it down.
Im using the latest version of the software that i downloaded and re-installed today and its still the same, any ideas?
Heres the code.
Thanks for your help

N1G21
[BILLET X35 Z85
N2G98
N3G28U0W0
N4M6T0101
N5G97M3S2092
N10 G01 X35 Z1
N20 G71 U1.0 R0.5
N30 G71 P20 Q60 U0.5 W0.5 F0.15
N40 X5.5
N50 G02 X35 Z-12 R12 F0.15
N60 G01 X35.5
N70 G70 P20 Q60
N80 M5
N90 M30

Try putting a F0.15 on the end of line N10

I think the feedrate will be 0 at this point, which will be why its freezing (the simulation doesn't take feedrate into account)