Hi all, I've never had problems running YT on Ranger before, but after my latest hg pull/update I'm getting the following error: In [3]: from yt.mods import * In [4]: from yt.analysis_modules.api import EnzoSimulation PMGR_COLLECTIVE ERROR: unitialized MPI task: Missing required environment variable: MPIRUN_RANK What's going on here? Best, Carolyn