You did not reply me if you installed your own python or use the software package? Please uninstall the python you installed, and reinstall lumerical package: unintal first, restart the computer, and sometimes you may need a clean installation. please refer “clean installation” https://optics.ansys.com/hc/en-us/articles/5613618572947-Fixing-installation-or-license-activation-issues
Please note that using the packaged python, you do not have the python GUI.
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