If ChimeraX worked before, then the bug is probably due to some other software you installed or updated in the last two weeks.  I would be suspicious of any software that modified the system's PATH environment variable during its installation.     HTH,     Greg On 4/7/2025 7:33 AM, kangkang042--- via ChimeraX-users wrote:

About 2 weeks ago, it worked fine. Today when I click the ChimeraX startup, nothing happened. I reinstalled the lastest version v1.9, nothing changed. Run ChimeraX-console.exe in cmd, it shows these information:

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 "E:\chimeraX\installation\bin\Lib\site- packages\chimerax\core\\__main__.py", line 1217, in <module>     exit_code = init(sys.argv)                 ^^^^^^^^^^^^^^   File "E:\chimeraX\installation\bin\Lib\site- packages\chimerax\core\\__main__.py", line 653, in init     sess = session.Session(            ^^^^^^^^^^^^^^^^   File "E:\chimeraX\installation\bin\Lib\site- packages\chimerax\core\session.py", line 551, in __init__     from chimerax.graphics.gsession import register_graphics_session_save   File "E:\chimeraX\installation\bin\Lib\site- packages\chimerax\graphics\\__init__.py", line 37, in <module>     import chimerax.arrays   File "E:\chimeraX\installation\bin\Lib\site- packages\chimerax\arrays\\__init__.py", line 24, in <module>     from ._pyarrays import get_lib, get_include, load_libarrays   File "E:\chimeraX\installation\bin\Lib\site- packages\chimerax\arrays\\_pyarrays.py", line 40, in <module>     from . import _arrays ImportError: DLL load failed while importing _arrays: 找不到指定的模块。

BUG: ImportError: DLL load failed while importing _arrays: 找不到指定的模块。

File "E:\chimeraX\installation\bin\Lib\site- packages\chimerax\arrays\\_pyarrays.py", line 40, in from . import _arrays

_See log for complete Python traceback._

My PC: Win11 Pro Workstation 26100.3624 _______________________________________________ ChimeraX-users mailing list -- chimerax-users@cgl.ucsf.edu To unsubscribe send an email to chimerax-users-leave@cgl.ucsf.edu Archives: https://mail.cgl.ucsf.edu/mailman/archives/list/chimerax-users@cgl.ucsf.edu/

I installed a Latest Microsoft Visual C++ Redistributable Version. Then ChimeraX works. ╰(*°▽°*)╯