Particle path ParticleEmitter:Add()

I’m trying to add particles with the ParticleEmitter, but it does not find the particle, because all I get is a missing texture square at the location of the particle.
I’ve tried having the prefix “effects/”, “effect/”, “particle/” and “particles/” and none of them works.
Does anyone know what I’m doing wrong?
local PE = ParticleEmitter(Vector(0,0,0), true)
local particle = PE:Add(‘embers_small_01’, player.GetAll()[1]:GetPos())

You cannot use .pcf particles inside a Lua particle. It’s PE:Add(“path to texture”, pos)

So you can only use the limited function ParticleEffectAttach for .pcf particles?

There are other ParticleEffect* functions, but yeah.