parport observation in outport out-inverter-1 seems not to work

2.9.7 I can't manage to start a configuration with inverted output ports.

pin 1-14-17 out-inverter-1 seems not to work

I can change state, but I can't start a setup with an inverted state

Weird.

Try creating a new config with StepConf and look at the HAL file(s) it generates or look at the hal file(s) in an example config to make sure your syntax is correct.

That's what I did when I ran into the problem