Do not run ChimeraX as root.  The clue is the "BUG: NotADirectoryError: [Errno 20] Not a directory: '/do/not/run/as/root/.config/ChimeraX'".   I'll work on a better error message.    -- Greg On 12/21/23 11:31, Wen via ChimeraX-users wrote:

Dear Elaine, I tried to install ChimeraX 1.7 on Red Hat Enterprise Linux 9.3. yum install mesa-libOSMesa-21.3.4-2.el9.x86_64.rpm yum install ucsf-chimerax-1.7-1.el9.x86_64.rpm

Everything went well. However, when I tried to launch ChimeraX, I met the following errors:  [wenliu@localhost Downloads]# chimerax QStandardPaths: runtime directory '/run/user/800' is not owned by UID 0, but a directory permissions 0700 owned by UID 800 GID 800 QStandardPaths: runtime directory '/run/user/800' is not owned by UID 0, but a directory permissions 0700 owned by UID 800 GID 800 NOTE: available bundle cache has not been initialized yet NOTE: Traceback (most recent call last):   File "<frozen runpy>", line 198, in _run_module_as_main   File "<frozen runpy>", line 88, in _run_code   File "/usr/libexec/UCSF-ChimeraX/lib/python3.11/site- packages/chimerax/core/__main__.py", line 1069, in <module>     exit_code = init(sys.argv)                 ^^^^^^^^^^^^^^   File "/usr/libexec/UCSF-ChimeraX/lib/python3.11/site- packages/chimerax/core/__main__.py", line 664, in init     toolshed.init(sess.logger, debug=sess.debug,   File "/usr/libexec/UCSF-ChimeraX/lib/python3.11/site- packages/chimerax/core/toolshed/__init__.py", line 1389, in init     _toolshed = Toolshed(*args, **kw)                 ^^^^^^^^^^^^^^^^^^^^^   File "/usr/libexec/UCSF-ChimeraX/lib/python3.11/site- packages/chimerax/core/toolshed/__init__.py", line 396, in __init__     settings.toolshed_last_check = now.isoformat()     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^   File "/usr/libexec/UCSF-ChimeraX/lib/python3.11/site- packages/chimerax/core/settings.py", line 199, in __setattr__     ConfigFile.__setattr__(self, name, value)   File "/usr/libexec/UCSF-ChimeraX/lib/python3.11/site- packages/chimerax/core/configfile.py", line 386, in __setattr__     ConfigFile.save(self)   File "/usr/libexec/UCSF-ChimeraX/lib/python3.11/site- packages/chimerax/core/configfile.py", line 335, in save     with SaveTextFile(self._filename) as f:          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^   File "/usr/libexec/UCSF-ChimeraX/lib/python3.11/site- packages/chimerax/core/safesave.py", line 191, in __init__     SaveFile.__init__(self, filename, open=open_text, critical=critical)   File "/usr/libexec/UCSF-ChimeraX/lib/python3.11/site- packages/chimerax/core/safesave.py", line 80, in __init__     raise OSError(errno.ENOTDIR, os.strerror(errno.ENOTDIR), save_dir) NotADirectoryError: [Errno 20] Not a directory: '/do/not/run/as/root/.config/ChimeraX'

BUG: NotADirectoryError: [Errno 20] Not a directory: '/do/not/run/as/root/.config/ChimeraX'

File "/usr/libexec/UCSF-ChimeraX/lib/python3.11/site- packages/chimerax/core/safesave.py", line 80, in __init__ raise OSError(errno.ENOTDIR, os.strerror(errno.ENOTDIR), save_dir)

 _See log for complete Python traceback._

ChimeraX did not launch. Could you advise me on how to proceed? Thanks in advance. Wen Liu @ UCHC

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