The start position X0 Y100 Z0.09 seems to be out of reach on my vertex delta.
When it moves to this position one of the arms fals of.
When I manually correct the Y value to 80 then he works perfect.
What is the matter?
Could you post a picture of the printer?
Check the belts
You want them tight but not to tight.
On a lot of these printers it’s the cable that’s not routed correctly
Could you send a picture of the whole printer?
Also in your picture one of the magnetic balls is out of the socket.