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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
Parameters Not Working Help!!!!! in Help
makimaki
0
117
makimaki
Unable to export moc3 file at this time. in Help
neete2neete2
2
85
neete2neete2
Failed to Output Gif Animation File in Help
RamenBearVTRamenBearVT
1
85
ookubo(staff) ookubo(staff)
[5.2.03b1] Make bounding boxes align to soft selection in Help
Ran_THRan_TH
3
133
ookubo(staff) ookubo(staff)
[Feature Request] Paste Form Special for ArtMesh to be similar to Paste Form Special for Warp Deform in Feature requests
SoultyRagevinSoultyRagevin
2
124
SoultyRagevinSoultyRagevin
Mesh Edit Deform Brush Tool in Feature requests
KachaKacha
4
227
ookubo(staff) ookubo(staff)
Augmented Physics - X parameter controlling Y parameter in Help
flubbletonflubbleton
1
140
flubbletonflubbleton
I have know idea how in Unity, how can I adjust speed animation in unity? in Help
nutrockgamernutrockgamer
0
33
nutrockgamernutrockgamer
Unable to export to moc3 file.. in Help
YSYYSY
4
220
YSYYSY
HELP Live2D won't open any file in Help
SariphySariphy
7
526
ookubo(staff) ookubo(staff)
ArtMesh line thickness is not changed in MacOS in Help
Ran_THRan_TH
3
73
ookubo(staff) ookubo(staff)
I have a question about CubismWebFramework in Help
skaska
1
64
nakayasui(staff)nakayasui(staff)
The validity of the license cannot be confirmed due to incorrect system time. (1 ,-40) in Help
craigthechickencraigthechicken
1
180
ookubo(staff) ookubo(staff)
Artmesh not Snapping to layer when imported in Help
Answered
HagitaHagita
2
150
HagitaHagita
Urgent! Need help with export runtime in Help
GwenArtGwenArt
1
58
ookubo(staff) ookubo(staff)
[Unity] Problems About Motion Priority & Fade in Help
Answered ✓
kiraiokiraio
9
487
kiraiokiraio
I can't export motion file in animation panel, nothing happens in Help
Answered
Evn_ESKEvn_ESK
2
104
ookubo(staff) ookubo(staff)
Does anyone know how to solve this error? in Help
Answered
VanilaVanila
1
73
ookubo(staff) ookubo(staff)
In the animator is it possible to go full screen like when you can’t see the timeline? in Help
ItsactuallyTeaDItsactuallyTeaD
1
43
ookubo(staff) ookubo(staff)
5.2.00 beta1 - Multiple form pasting won't work if the project file was created in an earlier ver. in Help
Tea_conTea_con
6
381
Enoko(Staff)Enoko(Staff)
Opening translation language files (To support other languages) in Feature requests
JekSun97JekSun97
4
164
ookubo(staff) ookubo(staff)
5.2.00 beta1 - Up/Down Eraser size adjustment no longer works in Help
cilliacillia
3
176
Enoko(Staff)Enoko(Staff)
Windows ARM64 version of Live2DCubismCore.dll in Help
ethanleeethanlee
5
311
ethanleeethanlee
Live2D Editor CONSTANTLY Crashes with No Warning in Help
ellumineellumine
1
220
ookubo(staff) ookubo(staff)
Unable to click link parameters when "Show only the paremeters active for selected object" in Help
EstEarth202EstEarth202
1
117
ookubo(staff) ookubo(staff)
Live2D Editor doesn't open. in Help
ann_karaann_kara
2
182
ookubo(staff) ookubo(staff)
Parameter Lock in Feature requests
Fluffy1Fluffy1
1
64
ookubo(staff) ookubo(staff)
Animation looks VERY different once its in Vtube Studio - completely missing layers & extra movement in Help
dandoartdandoart
1
546
KatomonKatomon
can “save as” only one time per 1 time program open in Help
kittiykittiy
1
43
ookubo(staff) ookubo(staff)
Stroke Mesh Mapping Custom Density in Feature requests
KatomonKatomon
1
45
ookubo(staff) ookubo(staff)