hello i just recently bought the apprentice HD and i have been using it for 2 to 3 days now and i have approached my first problem. i am trying to use the emit particle fluid tool and the only way it works is selecting an object and it will create an emitter but if i want to create the default one, not using any object, i get a prompt saying no object were selected. how can i fix this? i would like to use the default emitter.

There is no default emitter in houdini 12. They redid the way sourcing works, and it's much faster than the h11 way of doing it, I suggest you just create an object and use that.