Problem when parallelizing w/ two particle insertions

I'm having a problem with a pair of simulations in which I use two particle insertions to fill the system. Each simulation seems to run fine in serial mode, but crashes during the insertion phase when I try to run in parallel. It also runs fine if I turn off one of the insertions. I've also tried this with both insert_stream and insert_rate_region.

The first simulation is a V-blender, and the second is a small pin-mixer. I've attached a couple of zip files that contain the input decks and geometries. If anyone out there could try to run this and let me know if they can replicate the error, I'd appreciate it. I'm trying to sort out whether this is a bug in the code or something screwy on our cluster.

Lastly, I'll mention that I've tried the V-blender simulation using fewer, larger particles and it ran fine.

Thanks - Chris