Hello yt users, I have tried to save a clump dataset but I'm getting the following error: *Code:* *...* *find_clumps(master_clump, cmin, cmax, step)* *fn=master_clump.save_as_dataset(fields=["cell_mass", "total","x","y","z","velocity_x","velocity_y","velocity_z"])* *print(fn)* *...* *Error* *yt : [INFO ] 2017-09-22 10:34:12,164 Saving field data to yt dataset: G-0001_clump_0.h5.* *Traceback (most recent call last):* * File "Save_Clumps.py", line 43, in <module>* * master_clump.save_as_dataset(fields=["cell_mass", "total","x","y","z","velocity_x","velocity_y","velocity_z"])* * File "/home/jutreras/miniconda3/lib/python3.6/site-packages/yt/analysis_modules/level_sets/clump_handling.py", line 365, in save_as_dataset* * extra_attrs=extra_attrs)* * File "/home/jutreras/miniconda3/lib/python3.6/site-packages/yt/frontends/ytdata/utilities.py", line 149, in save_as_dataset* * _yt_array_hdf5(fh[field_type], field_name, data[field])* * File "/home/jutreras/miniconda3/lib/python3.6/site-packages/yt/frontends/ytdata/utilities.py", line 208, in _yt_array_hdf5* * dataset = fh.create_dataset(str(field), data=data)* * File "/home/jutreras/miniconda3/lib/python3.6/site-packages/h5py/_hl/group.py", line 111, in create_dataset* * self[name] = dset* * File "h5py/_objects.pyx", line 54, in h5py._objects.with_phil.wrapper (/home/ilan/minonda/conda-bld/h5py_1496889914775/work/h5py/_objects.c:2846)* * File "h5py/_objects.pyx", line 55, in h5py._objects.with_phil.wrapper (/home/ilan/minonda/conda-bld/h5py_1496889914775/work/h5py/_objects.c:2804)* * File "/home/jutreras/miniconda3/lib/python3.6/site-packages/h5py/_hl/group.py", line 276, in __setitem__* * h5o.link(obj.id <http://obj.id>, self.id <http://self.id>, name, lcpl=lcpl, lapl=self._lapl)* * File "h5py/_objects.pyx", line 54, in h5py._objects.with_phil.wrapper (/home/ilan/minonda/conda-bld/h5py_1496889914775/work/h5py/_objects.c:2846)* * File "h5py/_objects.pyx", line 55, in h5py._objects.with_phil.wrapper (/home/ilan/minonda/conda-bld/h5py_1496889914775/work/h5py/_objects.c:2804)* * File "h5py/h5o.pyx", line 202, in h5py.h5o.link (/home/ilan/minonda/conda-bld/h5py_1496889914775/work/h5py/h5o.c:3901)* *RuntimeError: Unable to create link (Name already exists)* A file G-0001_clump_0.h5 is created but when I try to load the data I get another error *----> 1 ds_clumps = yt.load('CLUMPS/G-0001_clump_0.h5')* *~/miniconda3/lib/python3.6/site-packages/yt/convenience.py in load(*args, **kwargs)* * 96 return output_type_registry[n](fn)* * 97 mylog.error("Couldn't figure out output type for %s", args[0])* *---> 98 raise YTOutputNotIdentified(args, kwargs)* * 99 * * 100 mylog.error("Multiple output type candidates for %s:", args[0])* *YTOutputNotIdentified: Supplied ('CLUMPS/G-0001_clump_0.h5',) {}, but could not load!* Cheers! José Utreras