For those that are getting the shapeshift “error”, this is normal and does not affect the operation of the macro.
If you want to make it so you don’t see the errors that can be caused by the macros, simply go into the GSE UI window, and select “Options” > “General” > “Gameplay Options” > “Prevent UI Errors”. @Elfyau has probably already selected this, and that’s why they can’t see it.