In mGear 3, when creating a new POST script (I haven’t tested PRE yet), the boiler-plate code that gets created still has the following import:
import mgear.shifter.customStep as cstp
import mgear.shifter.custom_step as cstp
And then the build fails because it can’t find the proper module.
And just in case it is relevant, I am doing this on an old guide that has been updated for mGear 3.0. I haven’t tried this on a completely fresh guide.