Hey -
So I haven’t solved your problem yet but I have found a relatively good workaround. I think you may have found a bug and I am doing some further testing to confirm. But, if you go into your Source module on the tail module for the Burst One and change the selection method to Random from Sequential and this next part is important: go into the Particle systems settings (Click in the open black area off to the side of your emitters and set the Warmup Time to 10.0. This will essentially have the engine run the effect once which if you don’t set it you will see the error generated on that first run, (which leads me to believe there is a bug here).
Hopefully this will get you started and I will keep you informed about the issue as I learn more.