How to fix "Queue is not empty after probing"

Can someone help me, how to solve the error "Queue is not empty after probing"

I built a controller for a fiber laser using a floating head system. When the machine starts running everything is fine, but after a few minutes of running, then it stops, and shows "Queue is not empty after probing"

 
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What routine are you using for probing?
Config files?
When you say "floating head" is that where the Z axis moves down till it touches the material to trigger the switch?

There has been a similar report here, seemed to be maybe PC hardware dependent:
www.forum.linuxcnc.org/38-general-linuxc...ter-probing?start=10

Are you actually using a probe routine?

Yes, I use G38.2 to find material for cutting.



M130 (activated motion.probe-in)
G38.2 Z-10 F800 (probe motion)
M131 (deactivated motion.probe-in)
M3 S1 (THCUD system floating contact)

(cutting code)

I use a core i3 processor, gigabyte motherboard, 8gb RAM

I assume you have checked latency as I have a older i7 3.5gb *gb ram and it is useless for linuxcnc because of massive latency spikes.

John