Hi,
I have created a cloned copy of the default python environment.
For convenience, I put the Conda command on the PATH system variable by adding "C:\Program Files\ArcGIS\Pro\bin\Python\Scripts".
I used the Conda Forge command from a command prompt (running as Administrator, might not be necessary, but why not) to install pygplates:
conda install conda-forge::pygplates
When you try and access Package Manager ArcGIS Pro crashes. Not sure how to get out of this mess or even fix my environment - it's a bit annoying that Pro just crashes out just like this - looks like I'm looking at a re-install and all the messing about that involves.
Was there anything else that rolled down the screen during the install?
I would be surprised if the conda-forge channel didn't want to updata a bunch of other packages.
Something may have been updated/installed that Pro didn't like (specifically arcgis, arcgisscripting and their dependencies)
I've broken cloned environments before mixing conda-forge and esri channels and avoid it now. If you want to install stuff from conda-forge, create a fresh (non esri) env with `conda create -c conda-forge <packages>`.
To get back to an unbroken env, in a terminal run `proswap arcgispro-py3`