Ooookay, I see what I did-- if you do $conda install --channel conda-forge yt it installs an earlier version, I fixed this issue by just updating: $conda update --channel conda-forge yt Thank you for the help! However! Now when I try to import, I have an issue with h5py: AttributeError: module 'h5py' has no attribute '__version__' I checked into it, and it looks like updating to 4.0.5 has essentially removed h5py (I can import h5py, but it can't do anything, it just has a few bare attributes like __file__). Looking at the readout during installation, it does say that these two packages will be removed: h5py-3.1.0-nompi_py38hafa665b_100 hdf5-1.10.6-nompi_h3c11f04_101 and I don't see anything installed to replace them. Should I just reinstall h5py separately? Thank you so much for your time, I hope I'm asking about this in the right place. If I'm not let me know!