Blender Crash if NLA tweak mode is enable for linked Armatures #119615

New Issue

rafek yousef · 2024-03-18T09:48:22+01:00

rafek yousef commented

2024-03-18 09:48:22 +01:00

System Information
Operating system: Windows-10-10.0.22621-SP0 64 Bits
Graphics card: NVIDIA RTX A6000/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 551.52

Blender Version
Broken: version: 4.0.2, branch: blender-v4.0-release, commit date: 2023-12-05 07:41, hash: 9be62e85b727
Worked: (newest version of Blender that worked as expected)

Short description of error
if you linked any Armature to a blender project and enter tweak mode in NLA and save it, and open it again and try to insert any key frame blender will crash unleas you exit tweak mode and enter it again for all entered tweak mode armtures
[Please fill out a short description of the error here]

Exact steps for others to reproduce the error
crean an Armature and make any key frames and Push down it to NLA then save the file, try to link that Armature to a new blender file, Make library overredden and enter tweak mode and make that action single user to be able to modify it, save the file and open it again try to isert any key frame, blender will crash

download the two attached files
open "Linked.blend" and press I to insert key frame
blender will crash

this issue is the same on blender 3.6 but in 3.3 blender do not crash but give a message

**System Information** Operating system: Windows-10-10.0.22621-SP0 64 Bits Graphics card: NVIDIA RTX A6000/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 551.52 **Blender Version** Broken: version: 4.0.2, branch: blender-v4.0-release, commit date: 2023-12-05 07:41, hash: `9be62e85b727` Worked: (newest version of Blender that worked as expected) **Short description of error** if you linked any Armature to a blender project and enter tweak mode in NLA and save it, and open it again and try to insert any key frame blender will crash unleas you exit tweak mode and enter it again for all entered tweak mode armtures [Please fill out a short description of the error here] **Exact steps for others to reproduce the error** crean an Armature and make any key frames and Push down it to NLA then save the file, try to link that Armature to a new blender file, Make library overredden and enter tweak mode and make that action single user to be able to modify it, save the file and open it again try to isert any key frame, blender will crash - download the two attached files - open "Linked.blend" and press I to insert key frame - blender will crash this issue is the same on blender 3.6 but in 3.3 blender do not crash but give a message

Linked.blend

1.3 MiB

main.blend

1.4 MiB

rafek yousef added the

labels 2024-03-18 09:48:23 +01:00

Pratik Borhade commented

2024-03-18 11:56:28 +01:00

Hi, thanks for the report. I can confirm. Haven't checked in debug build but guessing r_tweak_strip is null here

Hi, thanks for the report. I can confirm. Haven't checked in debug build but guessing `r_tweak_strip` is null here

Pratik Borhade added

and removed

labels 2024-03-18 11:56:45 +01:00

Sybren A. Stüvel added this to the 4.1 milestone 2024-03-18 15:17:42 +01:00

Sybren A. Stüvel self-assigned this 2024-03-18 15:17:46 +01:00

Sybren A. Stüvel commented

2024-03-18 15:37:19 +01:00

Turns out, it's actually adt->actstrip that's null. You can see this in the NLA editor as well, once you know what to look for:

Tweak mode disabled:

Tweak mode enabled:

Crashing blend file is a weird mix:

Turns out, it's actually `adt->actstrip` that's null. You can see this in the NLA editor as well, once you know what to look for: #### Tweak mode disabled: ![image](/attachments/2eb6838f-9ca5-4668-913b-16af07c60256) #### Tweak mode enabled: ![image](/attachments/5c519aa8-0ea7-4941-8d9a-6288188b3d86) #### Crashing blend file is a weird mix: ![image](/attachments/485ec9d7-a011-4f31-9253-813625201cf5)

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Sybren A. Stüvel referenced a pull request that will close this issue

2024-03-18 18:12:01 +01:00

Fix #119615: Anim, Crash with NLA tweak mode and linked Armatures #119632

Sybren A. Stüvel referenced this issue from a commit

2024-03-19 10:45:43 +01:00

Fix #119615: Anim, Crash with NLA tweak mode and linked Armatures