Libgdx 2d particleEffect possible loading bug (latest libgdx)

I’ve been using ParticleEffect for some weeks, and since last libgdx update it’s not working anymore (I didn’t update for some months).
This change in the code repository is the root of my errors:

public void loadEmitters (FileHandle effectFile) {

reader.readLine();
emitter.setImagePath(reader.readLine());

}

It seems those two lines are deleted in the last revision, and that makes an error when loading a particle, since emitter won’t have an imagePath.
Is that it’s expected behavior?? I was doing:

ParticleEffect particles = new ParticleEffect();
particles.load(Gdx.files.internal(particleName), Gdx.files.internal(particleFolder));

But now that emitter imagePath returns null no sprite is assigned to it. Should I load particles in a different way?? Looking at the wiki it seems the sample is using Atlases but I’m not using them for now (though I will end using them), will atlases images be mandatory for 2d particle effects??