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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
Diagonally Mirror Edit in Feature requests
nekopaonekopao
1
89
ueno(staff)ueno(staff)
Reflect in Mesh Edit Mode in Feature requests
TheArtGunTheArtGun
1
564
ueno(staff)ueno(staff)
moc3 freezing Live2D in Help
MushviriMushviri
1
454
ueno(staff)ueno(staff)
Can't get moc3 file to appear in Help
AkiaSNBAkiaSNB
5
780
Enoko(Staff)Enoko(Staff)
(Mac) Always crashing when loading up something (Editor and viewer) in Help
Jaiden087Jaiden087
22
1.8K
Enoko(Staff)Enoko(Staff)
Suggestion : Multi-Core Optimization for Texture Atlas Creator System in Feature requests
NiiraitsuNiiraitsu
1
104
Ran_THRan_TH
Why is my moc3 file not showing up after exporting? in Help
Answered
angicoangico
1
347
Enoko(Staff)Enoko(Staff)
Model not saving - "VM limit" error in Help
Answered
bcollie9bcollie9
3
589
kudo(Staff)kudo(Staff)
everytime a new pop-up opens, the application freezes/crashes in Help
liquidbutterfliesliquidbutterflies
1
173
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
422
kc_jagaimokc_jagaimo
Live 2D Editor not opening in Help
NirakshaaNirakshaa
3
190
kudo(Staff)kudo(Staff)
cmo3 file not opening (no backup) in Help
tinikoistinikois
1
175
tinikoistinikois
Live2D Editor won't open, goes unresponsive and freezes on Mac in Help
MausMaus
6
923
kudo(Staff)kudo(Staff)
Clothing in Help
Answered
Joey115Joey115
1
457
kudo(Staff)kudo(Staff)
timeline gone and 3-step is not used in Help
BunnyBunny
1
366
kudo(Staff)kudo(Staff)
Error 3, -105 While Activation in Help
akaisuirenakaisuiren
3
447
kudo(Staff)kudo(Staff)
Deform brush tool change (beta) shortcut to a new in Help
SunzuSunzu
1
150
kudo(Staff)kudo(Staff)
Is it possible to swap to a different pair of eyes? in Tips and Tricks
FrannyanArtFrannyanArt
1
570
kudo(Staff)kudo(Staff)
I can't export my moc3 file,how should i do? in Help
Answered
CarlosRENGOKUCarlosRENGOKU
2
188
kudo(Staff)kudo(Staff)
[BUG and FIX] Export PSD 262144 / null error bugfix in Help
pettankonpettankon
1
228
kudo(Staff)kudo(Staff)
Export physics3 tickbox greyed out in Help
VanahemirVanahemir
1
336
kudo(Staff)kudo(Staff)
How to hide warp deformer polygons in Help
SunzuSunzu
3
2K
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)
Ability to set the parent of deformed path from multiple artmesh in Feature requests
jarryjarry
1
55
kudo(Staff)kudo(Staff)
Drawing order not returning to normal even after I have changed it. in Help
egkkg0egkkg0
1
271
kudo(Staff)kudo(Staff)
[BUG] Physics output column width is not saved correctly in Help
Ran_THRan_TH
2
63
Ran_THRan_TH
[SERIOUS BUG] UI glitch is corrupting my project in Help
Ran_THRan_TH
2
98
kudo(Staff)kudo(Staff)
Layers that were invisible on CSP showing on Live2D? in Help
JenbooishJenbooish
1
356
kudo(Staff)kudo(Staff)
Missing parts using UnlitMasked material in Help
jreynaud1jreynaud1
4
1K
c0masc0mas
Moved: Missing parts using UnlitMasked material in Help
Closed
Tak.W(Staff)Tak.W(Staff)
0
1
Tak.W(Staff)Tak.W(Staff)