CTRL Z crash #94189

New Issue

I see you are undoing actions from the addon BoxCutter, which is not yet explicitly ported for Blender 3.0.
Does the crash occurs without using the addon ?
If not, I suggest reaching out directly to the addon creator : https://masterxeon1001.gumroad.com/l/BoxCutter

I see you are undoing actions from the addon BoxCutter, which is not yet explicitly ported for Blender 3.0. Does the crash occurs without using the addon ? If not, I suggest reaching out directly to the addon creator : https://masterxeon1001.gumroad.com/l/BoxCutter

Martin Pohl commented

2021-12-17 14:39:49 +01:00

It doesn't matter what I'm doing. It crashes every time.

2021-12-17_14-37-14.mp4

It doesn't matter what I'm doing. It crashes every time. [2021-12-17_14-37-14.mp4](https://archive.blender.org/developer/F12757764/2021-12-17_14-37-14.mp4)

Chaitanya Krishnan commented

2021-12-17 18:50:45 +01:00

Added subscriber: @ChaitanyaKrishnan

Chaitanya Krishnan commented

2021-12-17 18:50:45 +01:00

I can confirm this. has happened to me multiple times over the last 2-3 days, on two different machines.

configs for both are identical:
//i7-7700 cpu 3.60ghz
16gb ram
GTX 1060 6gb//

only difference between the machines is that one of them has a lot of games and vr programs installed.

I can also confirm that the file size or operation does not matter.. have had it occur when I undo ordinary object transforms, to complex tasks like baking sound to fcurves.

I can confirm this. has happened to me multiple times over the last 2-3 days, on two different machines. configs for both are identical: //i7-7700 cpu 3.60ghz 16gb ram GTX 1060 6gb// only difference between the machines is that one of them has a lot of games and vr programs installed. I can also confirm that the file size or operation does not matter.. have had it occur when I undo ordinary object transforms, to complex tasks like baking sound to fcurves.

Garek commented

2021-12-17 20:17:19 +01:00

Added subscriber: @Garek

Garek commented

2021-12-17 20:17:19 +01:00

Could you try to replicate it with default settings?
File -> Defaults -> Load Factory Settings

Could you try to replicate it with default settings? `File` -> `Defaults` -> `Load Factory Settings`

Martin Pohl commented

2021-12-17 20:34:50 +01:00

@Garek After resetting to defalt settings it does not crash. Does this mean that some add-on is causing this?

Martin Pohl commented

2021-12-17 20:42:56 +01:00

@Garek add-ons are back after restarting Blender and everything is fine. I wonder which setting caused the crashes? thanks for your help

Martin Pohl commented

2021-12-17 20:56:25 +01:00

So I take it back :-) after using the Boxcutter add-on it crashed again... :-(

Garek commented

2021-12-17 21:21:01 +01:00

Please open Blender's installation directory and double click on the blender_debug_gpu.cmd. This will start Blender in debug mode and create log files. Try to reproduce the error again. Once it crashes or you close Blender manually the Windows Explorer should open and show you up to two files, a debug log and the system information. Add them to your bug report by clicking on the upload button as shown in the screenshot below or via drag and drop. Please also upload the crash log located in C:\Users\[your username]\AppData\Local\Temp\[project name].crash.txt (or simply type %TEMP% into the path bar of the Windows Explorer).

Please open Blender's installation directory and double click on the `blender_debug_gpu.cmd`. This will start Blender in debug mode and create log files. Try to reproduce the error again. Once it crashes or you close Blender manually the Windows Explorer should open and show you up to two files, a debug log and the system information. Add them to your bug report by clicking on the upload button as shown in the screenshot below or via drag and drop. Please also upload the crash log located in `C:\Users\[your username]\AppData\Local\Temp\[project name].crash.txt` (or simply type `%TEMP%` into the path bar of the Windows Explorer).![2019_12_04_upload_icon_developer_blender_org.png](https://archive.blender.org/developer/F8190038/2019_12_04_upload_icon_developer_blender_org.png)

Martin Pohl commented

2021-12-17 21:55:16 +01:00

blender_system_info.txt

blender_debug_output.txt

[blender_system_info.txt](https://archive.blender.org/developer/F12758656/blender_system_info.txt) [blender_debug_output.txt](https://archive.blender.org/developer/F12758655/blender_debug_output.txt)

Garek commented

2021-12-17 22:31:48 +01:00

From what I see it should be BPainter add-on. You didn't use it while it crashed right?
Try to disable it and see if that helps.

From what I see it should be BPainter add-on. You didn't use it while it crashed right? Try to disable it and see if that helps.

Macreen Smith commented

2021-12-18 03:07:37 +01:00

Added subscriber: @MacSmitty

Macreen Smith commented

2021-12-18 03:07:37 +01:00

I tried doing this, but didn't get any crashes whatsoever. I'm not sure how you triggered the crash on your end. Maybe it is because of the add-on?

Martin Pohl commented

2021-12-18 08:27:19 +01:00

After disabling the BPainter add-on, I could not simulate the error. Cause probably found. Thanks

Garek commented

2021-12-18 09:27:40 +01:00

Changed status from 'Needs User Info' to: 'Archived'

Garek closed this issue

2021-12-18 09:27:40 +01:00

Garek commented

2021-12-18 09:27:40 +01:00

Great, thanks for cooperation. It was important to make sure that problem is not with Blender although we do not deal with bugs in add-ons that are not bundled with Blender,

You can reach out to add-on developer with those files so it can be fixed.

Great, thanks for cooperation. It was important to make sure that problem is not with Blender although we do not deal with bugs in add-ons that are not bundled with Blender, You can reach out to add-on developer with those files so it can be fixed.

Andreas Esau commented

2021-12-20 09:09:44 +01:00

Added subscriber: @ndee

Andreas Esau commented

2021-12-20 09:09:44 +01:00

Hi all,
I am the Dev of BPainter. I have to admit I am a bit stuck with this undo problematic. I noticed this already before Blender 3.0. I have the feeling, that Blender is doing weird things in texture paint UNDO which is also affecting BPainter.
Blender is sometimes undoing much more than it should. Somehow related to global undo. It seems that BPainter is then trying to access data that is not available anymore and there for crashing.

I am really not sure this is fixable from the Addon itself.

Some other issues seem to confirm my feeling:
https://developer.blender.org/T70814
https://developer.blender.org/T60660

Does anyone have more information on that undo problematic in texture paint mode?

Hi all, I am the Dev of BPainter. I have to admit I am a bit stuck with this undo problematic. I noticed this already before Blender 3.0. I have the feeling, that Blender is doing weird things in texture paint UNDO which is also affecting BPainter. Blender is sometimes undoing much more than it should. Somehow related to global undo. It seems that BPainter is then trying to access data that is not available anymore and there for crashing. I am really not sure this is fixable from the Addon itself. Some other issues seem to confirm my feeling: https://developer.blender.org/T70814 https://developer.blender.org/T60660 Does anyone have more information on that undo problematic in texture paint mode?

Andreas Esau commented

2021-12-20 11:14:16 +01:00

Ok.. after some investigation I think I got the issue resolved. It seems definitely to be caused by BPainter.
I am going to release a new version as soon as possible.

Ok.. after some investigation I think I got the issue resolved. It seems definitely to be caused by BPainter. I am going to release a new version as soon as possible.

Garek commented

2021-12-20 11:18:18 +01:00

@ndee hi, was about to write you and before sending refreshed page and saw that it's resolved. Good to hear. I'll leave what I wanted to say here as a quote just in case.

only thing about "undo twice" that I remember is this commit, may or may not be related:
1b4d5c7a35
But that is only for 3.0. If this gives you nothing I suggest this can be done:

Look at release page about python API if you haven't already, perhaps it's really just 3.0 change and you missed some important change:
https://wiki.blender.org/wiki/Reference/Release_Notes/3.0/Python_API

Try to narrow down the problem to most simple script you can. With this and debug output caused by such script you can write bugreport that can be reviewed since it'll be about python API/undo and not add-on itself.

If you know how to build Blender and have reliable reproduce steps you can use bisect to narrow down problem to certain commit. While this is not required that'll help a lot, see:
https://wiki.blender.org/wiki/Tools/GitBisectWithEventSimulation

Perhaps someone on blender.chat in #python channel encountered same issue or can help you or at least help to narrow down the problem to file bugreport.

@ndee hi, was about to write you and before sending refreshed page and saw that it's resolved. Good to hear. I'll leave what I wanted to say here as a quote just in case. > only thing about "undo twice" that I remember is this commit, may or may not be related: > 1b4d5c7a35 > But that is only for 3.0. If this gives you nothing I suggest this can be done: > - Look at release page about python API if you haven't already, perhaps it's really just 3.0 change and you missed some important change: > https://wiki.blender.org/wiki/Reference/Release_Notes/3.0/Python_API > - Try to narrow down the problem to most simple script you can. With this and debug output caused by such script you can write bugreport that can be reviewed since it'll be about python API/undo and not add-on itself. > - If you know how to build Blender and have reliable reproduce steps you can use `bisect` to narrow down problem to certain commit. While this is not required that'll help a lot, see: > https://wiki.blender.org/wiki/Tools/GitBisectWithEventSimulation > - Perhaps someone on blender.chat in `#python` channel encountered same issue or can help you or at least help to narrow down the problem to file bugreport.

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CTRL Z crash #94189