Hi everyone, I was trying to use yt 3.0 with the Gasoline sample dataset that we have available on http://yt-project.org/data , and it fails in two ways: 1) yt cannot figure out what the dataset is using the simple "load" command as in: from yt.mods import * ds = load(filename) ... yt.utilities.exceptions.YTOutputNotIdentified: Supplied ('agora_1e11.0040',) {}, but could not load! 2) When I manually ask it to see the file as a TipsyDataset, it also fails, as it expects parameters to be set: from yt.mods import * ds = TipsyDataset(filename) ... File "/Users/chummels/src/yt-i386/src/yt-hg/yt/frontends/sph/data_structures.py", line 396, in __init__ self.parameters['nbodies'], AttributeError: 'TipsyDataset' object has no attribute 'parameters' This seems like a bug. Any ideas as to a solution? This dataset did not come with a parameter file for it. Cameron -- Cameron Hummels Postdoctoral Researcher Steward Observatory University of Arizona http://chummels.org