Hi all, We are trying to obtain inputs for RADMC3D from RAMSES data using the method from : http://yt-project.org/doc/analyzing/analysis_modules/radmc3d_export.html I get the following error message In [5]: writer = RadMC3DWriter(ds) --------------------------------------------------------------------------- AttributeError Traceback (most recent call last) <ipython-input-5-e2ea2893623c> in <module>() ----> 1 writer = RadMC3DWriter(ds) /Users/astrid/miniconda2/lib/python2.7/site-packages/yt/analysis_modules/radmc3d_export/RadMC3DInterface.pyc in __init__(self, ds, max_level) 146 self.cell_count += np.product(ds.domain_dimensions) 147 --> 148 sorted_grids = sorted(ds.index.grids, key=lambda x: x.Level) 149 for grid in sorted_grids: 150 if grid.Level <= self.max_level: AttributeError: 'RAMSESIndex' object has no attribute 'grids' which apparently has already popped up in the past (http://lists.spacepope.org/pipermail/yt-users-spacepope.org/2015-October/006... ). Has this issue been fixed somewhere? How can we get this to work? Thanks, Astrid Astrid Lamberts Postdoctoral Researcher TAPIR Group, Caltech