probe_basic_postgui.hal conflicts with my gamepad*.hal

I try to integrate my gamepad (which is working under axis) into Probe Basic.
When I read the error report correct "not: already exists" is the complaint.
I tried to format the not function in an other way in the probe_basic_postgui.hal, but that doesn't work.
Even if I only add a simple halfile = not.hal (instead of gamepad-encoder-16.hal) with a single not function I get an error.

TWOPASS was already on.