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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
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Most Recent
No customer support response to -1005 License error. in Help
KDowneyKDowney
2
82
ookubo(staff) ookubo(staff)
Deformer Referencing in Feature requests
CrunchyCrunchy
1
91
ookubo(staff) ookubo(staff)
how I can recover my license of the program? in Help
Answered
blueoceanlatteblueoceanlatte
2
360
KDowneyKDowney
Please have a license deactivation online. in Feature Requests
reflairreflair
1
206
KDowneyKDowney
잔상이 생깁니다. 도와주세요.(해결) in Help
haeyonghaeyong
0
62
haeyonghaeyong
Export Placement and transparency parameters values and use them in Unity in General Discussions
NoireNoire
1
165
yasu.o@live2dyasu.o@live2d
general opacity in unity model in Other Live2D Products and Tools (Other Photoshop Scripts, Sample Data, etc.)
dacerdacer
1
119
yasu.o@live2dyasu.o@live2d
Unity "This .moc3 file version is "Unknown"!!" in Other Live2D Products and Tools (Other Photoshop Scripts, Sample Data, etc.)
aLifaLif
1
115
aLifaLif
Live2D Cubism can't make Nintendo Switch Build on Unity in Help
BobbyHTTBobbyHTT
4
146
BobbyHTTBobbyHTT
Copy/Paste & Saving is Crashing Live2D - Possible Memory Leak? in Help
TendieTendie
4
257
TendieTendie
Bug Report in Help
JohnWithersIIIJohnWithersIII
1
115
Enoko(Staff)Enoko(Staff)
Automesh generation factors in Help
Ran_THRan_TH
2
81
Enoko(Staff)Enoko(Staff)
.mtn files and Tyrano Builder in Help
ArcanumSolumArcanumSolum
0
85
ArcanumSolumArcanumSolum
Live2d 5.2 creates few backup files in Help
NoireNoire
2
167
NoireNoire
I want to change the default fps for exporting animations，what should i do？ in Tips and Tricks
Answered
yywywyywyw
1
98
fukui(staff)fukui(staff)
Live 2D Crashing in Help
Question
TendieTendie
1
486
fukui(staff)fukui(staff)
License Activation Error due to tampering with system clock settings in Help
indigo_choindigo_cho
4
488
indigo_choindigo_cho
[HELP] Exception in thread "AWT-EventQueue-0" java.lang.OutOfMemoryError: Java heap space in Help
NikkBzNikkBz
1
274
Enoko(Staff)Enoko(Staff)
Model part customization - SDK in Help
cocomomo123cocomomo123
0
54
cocomomo123cocomomo123
Feature Request: Parameter Naming in Feature requests
nekopaonekopao
1
74
Enoko(Staff)Enoko(Staff)
Failed to output. (-2039259484) in Help
Answered
blivexxblivexx
10
1.1K
ueno(staff)ueno(staff)
Tool details window is empty in Help
wwonliwwonli
1
375
Enoko(Staff)Enoko(Staff)
Additional Blendshape Features in Feature requests
ColinHarvieColinHarvie
1
75
Enoko(Staff)Enoko(Staff)
i just want to suggest to make a reflected parameter features in Feature requests
nekopaonekopao
3
124
Enoko(Staff)Enoko(Staff)
My deformer brush isnt working! in Help
belnadesbelnades
1
107
Enoko(Staff)Enoko(Staff)
License activation failed in Help
BlackZStudiosBlackZStudios
6
1.5K
Enoko(Staff)Enoko(Staff)
Help! in Help
tasquktasquk
1
104
Enoko(Staff)Enoko(Staff)
CubismSDK For Java how to make it responsive in Help
kokokoko
3
166
obsidianobsidian
License activation failed (1 ,-191) in Help
ArcanumSolumArcanumSolum
3
216
Enoko(Staff)Enoko(Staff)
Moved: My deformer brush isnt working! in Help
Closed
Enoko(Staff)Enoko(Staff)
0
1
Enoko(Staff)Enoko(Staff)