Dear Lauren, Sorry for the trouble, this is a known bug that shows up with the upgrade to `silx==1.0.0`, a dependency of Larch. We have fixed it in the master brach of Larch on Github, as discussed here: https://github.com/xraypy/xraylarch/issues/332 The quick fix is to reinstall larch with: GetLarch.sh --devel This will install a development version that is currently equivalent to 0.9.57 but with this bug fixed. Best, Mauro On 2022-01-04 21:51, Lauren N. Pincus wrote:

Hi Matt,

I'm having an issue with reinstalling Larch. I'm using macOS Catalina 10.15.7. I had Larch previously installed and it was working well, but found I was no longer able to open up XAS Viewer. The application would start and then quit.

So, I removed Larch from my system and tried to reinstall it. I first used the mac installer but would get an error that the "Installation failed. The installer encountered an error that caused the installation to fail."

I then tried the installation using the script in terminal. This appeared successful, but no desktop shortcut was created. I tried to create a desktop shortcut using larch -m but get the following error:

(base) laurenpincus@lnp24mbp2020 ~ % larch -m

Traceback (most recent call last):

File "/Users/laurenpincus/xraylarch/bin/larch", line 5, in <module>

from larch.apps import run_larch

File "/Users/laurenpincus/xraylarch/lib/python3.9/site-packages/larch/__init__.py", line 52, in <module>

from . import builtins

File "/Users/laurenpincus/xraylarch/lib/python3.9/site-packages/larch/builtins.py", line 22, in <module>

from . import io

File "/Users/laurenpincus/xraylarch/lib/python3.9/site-packages/larch/io/__init__.py", line 39, in <module>

from .specfile_reader import (str2rng_larch, read_specfile, open_specfile,

File "/Users/laurenpincus/xraylarch/lib/python3.9/site-packages/larch/io/specfile_reader.py", line 26, in <module>

from silx.io.convert import write_to_h5, _is_commonh5_group

ImportError: cannot import name '_is_commonh5_group' from 'silx.io.convert' (/Users/laurenpincus/xraylarch/lib/python3.9/site-packages/silx/io/convert.py)

(base) laurenpincus@lnp24mbp2020 ~ %

Thanks, Lauren

Lauren Pincus, PhD NSF Earth Sciences Postdoctoral Fellow Princeton University Department of Geosciences

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