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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.

Recent Discussions

Discussion List

Discussion
Started By
Replies
Views
Most Recent
everytime a new pop-up opens, the application freezes/crashes in Help
liquidbutterfliesliquidbutterflies
1
164
Enoko(Staff)Enoko(Staff)
the edge of artmesh drawing suddenly became pixelated in Other Live2D Products and Tools (Other Photoshop Scripts, Sample Data, etc.)
kc_jagaimokc_jagaimo
2
388
kc_jagaimokc_jagaimo
Live 2D Editor not opening in Help
NirakshaaNirakshaa
3
175
kudo(Staff)kudo(Staff)
cmo3 file not opening (no backup) in Help
tinikoistinikois
1
164
tinikoistinikois
Live2D Editor won't open, goes unresponsive and freezes on Mac in Help
MausMaus
6
886
kudo(Staff)kudo(Staff)
Clothing in Help
Answered
Joey115Joey115
1
443
kudo(Staff)kudo(Staff)
timeline gone and 3-step is not used in Help
BunnyBunny
1
344
kudo(Staff)kudo(Staff)
Error 3, -105 While Activation in Help
akaisuirenakaisuiren
3
426
kudo(Staff)kudo(Staff)
Deform brush tool change (beta) shortcut to a new in Help
SunzuSunzu
1
125
kudo(Staff)kudo(Staff)
Is it possible to swap to a different pair of eyes? in Tips and Tricks
FrannyanArtFrannyanArt
1
532
kudo(Staff)kudo(Staff)
I can't export my moc3 file,how should i do? in Help
Answered
CarlosRENGOKUCarlosRENGOKU
2
176
kudo(Staff)kudo(Staff)
[BUG and FIX] Export PSD 262144 / null error bugfix in Help
pettankonpettankon
1
216
kudo(Staff)kudo(Staff)
Export physics3 tickbox greyed out in Help
VanahemirVanahemir
1
316
kudo(Staff)kudo(Staff)
Moved: How to hide warp deformer polygons in Help
Closed
Tak.W(Staff)Tak.W(Staff)
0
1
Tak.W(Staff)Tak.W(Staff)
How to hide warp deformer polygons in Help
SunzuSunzu
3
2K
kudo(Staff)kudo(Staff)
Ability to set the parent of deformed path from multiple artmesh in Feature requests
jarryjarry
1
47
kudo(Staff)kudo(Staff)
Drawing order not returning to normal even after I have changed it. in Help
egkkg0egkkg0
1
256
kudo(Staff)kudo(Staff)
[BUG] Physics output column width is not saved correctly in Help
Ran_THRan_TH
2
56
Ran_THRan_TH
[SERIOUS BUG] UI glitch is corrupting my project in Help
Ran_THRan_TH
2
84
kudo(Staff)kudo(Staff)
Layers that were invisible on CSP showing on Live2D? in Help
JenbooishJenbooish
1
345
kudo(Staff)kudo(Staff)
Moved: Missing parts using UnlitMasked material in Help
Closed
Tak.W(Staff)Tak.W(Staff)
0
1
Tak.W(Staff)Tak.W(Staff)
Missing parts using UnlitMasked material in Help
jreynaud1jreynaud1
4
982
c0masc0mas
Reset the mask in Help
c0masc0mas
3
430
c0masc0mas
Automatic Deformer Generation on initial PSD import in Feature requests
ARSARS
1
55
kudo(Staff)kudo(Staff)
Freezing when using Save, Save As, and Open... in Help
BlackGBlackG
1
282
BlackGBlackG
Freezing When using Save, Save As, and Open... in Help
BlackGBlackG
0
21
BlackGBlackG
The head and body of my model seem to have a problem I don’t understand it’s not moving together. in Help
Answered
Joey115Joey115
1
494
kudo(Staff)kudo(Staff)
Difficulty selecting keyframes in Editor in Feature requests
cilliacillia
1
115
kudo(Staff)kudo(Staff)
Getting extra images blown up in scene. in Help
OmieOmie
1
53
kudo(Staff)kudo(Staff)
It's a problem where you can't move your mouth when you export it to a json file. in Other Live2D Products and Tools (Other Photoshop Scripts, Sample Data, etc.)
Answered
peporilpeporil
12
902
peporilpeporil