[Regarding macOS Tahoe](Updated September 18, 2025)
We cannot guarantee the compatibility of the current releases of Live2D Cubism Editor and Cubism SDK with macOS Tahoe.
We advise against upgrading your macOS at this time as it may cause Live2D products not to function correctly.
Upgrading macOS can also cause you to lose your Cubism Editor license file.
Please make sure to deactivate your Cubism Editor license before upgrading the macOS.
For more details:
https://help.live2d.com/en/other/other_09/For inquiries regarding issues with license purchases or license activation errors, please contact us through the
email form.Live2d Cubism 4.0 doesn't open
Comments
Can you check here "System Requirements"?
https://help.live2d.com/en/other/old-cubism-editor-system-requirements/
Perhaps, your machine cannot meet the requirements.
Does your machine have GPU?
And, I think your machine is a little old. I recommend to buy newer.