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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
Model file is too big, can’t export in Help
Answered
kyoko_nyakyoko_nya
3
319
ookubo(staff) ookubo(staff)
Auto-Adjust Animation Window to Match Model Canvas Size in Feature requests
indigo_choindigo_cho
3
188
indigo_choindigo_cho
Allow Brush Size to Be Assigned to Hotkeys (Like Photoshop & Clip Studio Paint) in Feature requests
indigo_choindigo_cho
1
133
ookubo(staff) ookubo(staff)
"Thread-595" kotlin.NotImplementedError in Help
DeerTrashDeerTrash
1
37
ookubo(staff) ookubo(staff)
Some textures are blurry but atlas is at 100% in Help
CamelliavtCamelliavt
0
36
CamelliavtCamelliavt
Pendulum flicker in Bug
opalukopaluk
1
25
ookubo(staff) ookubo(staff)
Bug with 5.2 in Help
hanakosumirehanakosumire
16
763
ookubo(staff) ookubo(staff)
Normal And Reverse Masks On One Artmesh in Feature Requests
MadetreMadetre
1
170
ookubo(staff) ookubo(staff)
Dependence of physics on parameters in Help
JekSun97JekSun97
1
38
ookubo(staff) ookubo(staff)
Deform Path Tool and Multiple Art Meshes Issue in Help
gfreitaggfreitag
4
621
Enoko(Staff)Enoko(Staff)
Pro Trial version "ended" after three days in Help
SaltyScarsSaltyScars
1
45
ookubo(staff) ookubo(staff)
CubsimSDKForNative-5-r.4 OpenGL Sample Linux Memory Leak in Help
UllrUllr
1
65
nakayasui(staff)nakayasui(staff)
Can i activate license with older versions? in Help
Answered
FourtyFurFourtyFur
1
57
ookubo(staff) ookubo(staff)
help I'm having resolution limits when I've paid for pro in Help
ItsactuallyTeaDItsactuallyTeaD
1
76
ookubo(staff) ookubo(staff)
Live2D Cubism (5.2.03) keeps crashing after pressing continue on the Free Trial in Help
DYMBGIRLDYMBGIRL
1
106
ookubo(staff) ookubo(staff)
How to stop Cubism Harmonic Motion Controller in Help
jeetmeisterjeetmeister
2
127
jeetmeisterjeetmeister
Support loading remote ArtMesh files and parameters in Feature requests
JekSun97JekSun97
1
65
Tak.W(Staff)Tak.W(Staff)
Vtuber model errors that are bricking Live2d in Help
YoshinoArtYoshinoArt
3
210
YoshinoArtYoshinoArt
Feature Request: Improved Automatic Layout in "Edit Texture Atlas" in Feature requests
Tea_conTea_con
2
149
cilliacillia
[BUG] Prefabs generated on import cause build failure in Feature Requests
Answered ✓
kiraiokiraio
2
158
kiraiokiraio
Live2D AE Plugin Don't Activated Even i activated it in Live2D Editor in Other Live2D Products and Tools (Other Photoshop Scripts, Sample Data, etc.)
m3wyzm3wyz
1
170
ookubo(staff) ookubo(staff)
[5r4] Is Repeat parameter supported on SDK now? in Help
Ran_THRan_TH
1
104
ookubo(staff) ookubo(staff)
Modifying Physics output scale in unity in Help
jeetmeisterjeetmeister
2
179
jeetmeisterjeetmeister
[Unity] Hide CubismMoc "Bytes" field in Inspector in Feature Requests
kiraiokiraio
2
60
kiraiokiraio
[Unity] Motion won't play on build in Help
kiraiokiraio
3
635
kiraiokiraio
WAV file won't import despite it being formatted correctly in Help
MiyaMiya
25
1.6K
ookubo(staff) ookubo(staff)
Repeat Params In The Animation Window in Feature requests
mynemomomynemomo
1
85
ookubo(staff) ookubo(staff)
Needing help at increasing the RAM limit of Live2d. in Help
yolkcreatoryolkcreator
6
879
obsidianobsidian
Export 1 worked, fixed opacity after Vtube Studio test, export 2 failed in Help
AidenSuzunoAidenSuzuno
3
190
KatomonKatomon
Failed to output. (NegativeArraySizeException) in Help
YiotaYiota
2
164
KatomonKatomon