The problem is that (for whatever reason) your joypad isn't creating a pin of that name. So you need to find out what HAL pins your joypad does create.
Open a terminal when LinuxCNC is not running and type the following
Code:
halrun
loadusr -W hal_input -KRAL usb
loadusr halshow
That starts the HAL realtime environment and then loads the joypad driver. It then opens a halshow that will allow you to list all the HAL pins associated with the joypad
You can then select the "watch" tab, add the pins from the list on the left to that, and see what hal pin name corrsponds to which physical button.
You can open Halshow from inside LinuxCNC (machine-<show hal config in Axis) but doing it inside LinuxCNC makes it less obvious which HAL pins are the joypad.
