Well the same problem happened again.
Our new machine is down again with exactly the same symptoms. I was doing exactly the same thing I was the last time it failed, moving the Z axis with the front panel buttons.
The owner of the rep company had given me his number and we have conversed (that is one very good thing so far) and he thinks he knows what the problem is. He has said he will bring me a new system if it comes down to it. Let's hope it does not.
To be honest, I am quite disheartened about the ordeal.
We'll see how they deal with this one and as before I will keep you informed.
David (the laser killer)