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[About Cubism Editor / SDK 5.4 Alpha](Updated: July 14, 2026)

You can download the alpha installer from the dedicated forum below.
If you have any feedback regarding the alpha version, including feature requests or bug reports, please use the same forum.

Cubism Editor / SDK 5.4 Alpha Forum
https://creatorsforum.live2d.com/c/cubismeditorsdk54alpha/

[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.

Trouble properly loading exported MTNs?

cddbcddb
in Help
Hi,
I have a model which I can load and manipulate properly in Live2d Viewer.

And then I also have a few motion files I've exported using the Animator, and they appear to work fine in the Animator program.

...But when I try to "set the motions" in Live2d Viewer (drag and drop .MTNs, a folder is created called "motions", etc),
they show up on the list but they don't seem to do anything?
In other words, when I try to play any particular motion, the model does not respond.

The model DOES respond to the built-in functions ("breath", "blink"), but not my MTNs. Any suggestions?

Thanks
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Comments

  • cddbcddb
    One thing I'm noticing is that the MTN I'm trying to use, when viewed in notepad, has this line at the bottom:
    __DURATION__=0,0,0,0

    I haven't seen such a line in the demo material, or in the manual.... I'm wondering if this has something to do w/ what I'm doing wrong within Animator?

    Thanks
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  • cddbcddb
    Sorry for posting so much, I was having trouble with this!
    But I've figured out what my error was. Everything working OK now ^_^
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  • [Deleted User][Deleted User]
    Thanks for solving the issue :D . If feasible, could you tell what your error was?
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