The problem is most probably caused by your bed being too high. When the probing starts, the bed is already against the nozzle, or too close.
We decided to shorten the active leveling procedure by starting closer to the nozzle. A bed that is set nominally starts 2.5mm (by heart) from the nozzle. At least 0.5mm distance is required at the start. So a bed may be 2mm higher than nominal.
Lower your bed by using the knurled nuts under the bed, and you will probably see it works again.
The nominal position of the bed: there is 14mm distance between the top of the base plate and the bottom of the heater plate.
i had a similar problem
they have some problems with the firmware I think :)everything works but its not fail safe...Edited by Guest
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