If you have any questions, reports, suggestions, or requests about Live2D, please send them to this forum.
※We cannot guarantee statements or answers from Live2D staff. Thank you for your understanding in advance.
Live2D Cubism
Cubism Products and Downloads
Cubism product manuals and tutorials
Cubism Editor Manual
Cubism Editor Tutorial
Cubism SDK Manual
Cubism SDK Tutorial
[Regarding macOS Tahoe](Updated October 16, 2025)
macOS v26 Tahoe is now supported!
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.

Comments
Thank you for your contact.
This is Live2D Support.
We apologize for any inconvenience this may cause.
・Please delete the following configuration folder and check the behavior of the Editor.
【Windows】
C:\Users\{User name}\AppData\Roaming\Live2D\Cubism4_Editor\
・Does this also happen with the latest version (4.1.04) of Editor?
・Could you please tell me the resolution of the two monitors?
We appreciate your cooperation
Thank you.
I have a 4K monitor as my main and 1080p for the second one.
When the Live2D window expands to other monitor, it seems that Editor window on the other monitor is not "refreshing" the display as it will stays black unless I move my mouse around the panel. I'm still able to interact with the panel, clicking on buttons, etc, but non-interactable element like the canvas or panel borders stay black.
I haven't tried to delete the configuration folder, but I will try it later.
i have tried deleting the mentioned configuration folder and the problem still persist. i have also found out that version 4.1.01 also show the same error on the log when stretched on multiple monitor but that does not have a noticeable effect on the performance so it might be a different problem.
the version i am using to test this is the latest version (4.1.04)
the resolution on my monitor is 2560x1600 while my 2nd monitor is 1920x1080. i have not tried replicating the problem on the monitor with same resolution because i did not have it.
Thank you for sharing this information.
Please check the behavior by setting the magnification ratio of each monitor to 100%.
We appreciate your cooperation
Thank you.
Thank you for the amazing support, i can now use the latest version of Live2D.