Sprite overlapping Particle, not workin

So I have my game working, and then in the last update of the engine, it stopped the particles working as it used to.

Basically, at the start of the layout, it would generate a particle overtop of another sprite, and if the character overlapped said particle, it would jump. Now it only works if you put the particle in manually, as you can see from the attached CAPX

dl.dropboxusercontent.com/u/108799982/Capx%20Demos/ParticleJump.capx

Could someone confirm that it is the engine, as I haven't changed anything from the code since the last build.