Hi, I'm writing this since I got a similar problem loading data. my output data is the halo catalogs from hop halo finder, and the simulation code is Gear(this is a chemo-dynamical tree SPH code based on Gadget) When I try to load the file, there is an error like this " yt.load("halo_catalogs/snapshot_0565/snapshot_0565.0.h5") --> utf-8' codec can't decode byte 0x86 in position 216: invalid start byte " I know that the cause of this error is the encoding type, but I don't know how to handle this in yt. I tried to load the file in HDFView and saved it to hdf5 format, but there is another error - 'Could not determine input format from ~' Is there any way to load this file? I'll attach the google drive link to get this file. https://drive.google.com/file/d/1lWEfsPpBjsSqOoXNNAiP2E3-YGHAuM3K/view?usp=s... Thanks, HyeonYong