Hello All, I was having an issue with the yt.create_profile command, and I wanted to see if updating yt would help fix the issue. However, when I updated my anaconda yt installation to yt 3.6.1, I am now having this issue every time I try to load yt: --------------------------------------------------------------------------- ValueError Traceback (most recent call last) <ipython-input-1-3f99c158a398> in <module> ----> 1 import yt 2 import numpy as np 3 from yt import YTQuantity 4 5 import glob ~/anaconda3/lib/python3.7/site-packages/yt/__init__.py in <module> 61 display_ytarray 62 ---> 63 from yt.fields.api import \ 64 field_plugins, \ 65 DerivedField, \ ~/anaconda3/lib/python3.7/site-packages/yt/fields/api.py in <module> 17 field_plugins 18 ---> 19 from . import angular_momentum 20 from . import astro_fields 21 from . import cosmology_fields ~/anaconda3/lib/python3.7/site-packages/yt/fields/angular_momentum.py in <module> 24 register_field_plugin 25 ---> 26 from .vector_operations import \ 27 create_magnitude_field 28 ~/anaconda3/lib/python3.7/site-packages/yt/fields/vector_operations.py in <module> 30 handle_mks_cgs 31 ---> 32 from yt.geometry.geometry_handler import \ 33 is_curvilinear 34 ~/anaconda3/lib/python3.7/site-packages/yt/geometry/geometry_handler.py in <module> 27 from yt.utilities.io_handler import io_registry 28 from yt.utilities.logger import ytLogger as mylog ---> 29 from yt.utilities.parallel_tools.parallel_analysis_interface import \ 30 ParallelAnalysisInterface, parallel_root_only 31 from yt.utilities.exceptions import YTFieldNotFound ~/anaconda3/lib/python3.7/site-packages/yt/utilities/parallel_tools/parallel_analysis_interface.py in <module> 28 29 from yt.config import ytcfg ---> 30 from yt.data_objects.image_array import ImageArray 31 import yt.utilities.logger 32 from yt.utilities.lib.quad_tree import \ ~/anaconda3/lib/python3.7/site-packages/yt/data_objects/image_array.py in <module> 16 from yt.config import \ 17 ytcfg ---> 18 from yt.visualization.image_writer import write_bitmap, write_image 19 from yt.units.yt_array import YTArray 20 ~/anaconda3/lib/python3.7/site-packages/yt/visualization/image_writer.py in <module> 24 from yt.units.yt_array import YTQuantity 25 from yt.utilities.exceptions import YTNotInsideNotebook ---> 26 from .color_maps import mcm 27 from . import _colormap_data as cmd 28 import yt.utilities.lib.image_utilities as au ~/anaconda3/lib/python3.7/site-packages/yt/visualization/color_maps.py in <module> 162 } 163 --> 164 add_colormap("cubehelix", _cubehelix_data) 165 166 # The turbo colormap, by Anton Mikhailov. ~/anaconda3/lib/python3.7/site-packages/yt/visualization/color_maps.py in add_colormap(name, cdict) 50 mcm.__dict__[name] = cdict 51 try: # API compatibility ---> 52 mcm.register_cmap(name, yt_colormaps[name]) 53 except AttributeError: 54 pass ~/anaconda3/lib/python3.7/site-packages/matplotlib/cm.py in register_cmap(name, cmap, override_builtin) 147 if not override_builtin and name in __builtin_cmaps: 148 msg = f"Trying to re-register the builtin cmap {name!r}." --> 149 raise ValueError(msg) 150 else: 151 msg = f"Trying to register the cmap {name!r} which already exists." ValueError: Trying to re-register the builtin cmap 'cubehelix'. I was wondering if anyone else had experienced a similar issue?