Saving a blender file is bugged #84178

New Issue

Trovvie Teller · 2020-12-27T15:59:58+01:00

Trovvie Teller commented

2020-12-27 15:59:58 +01:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 1050 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 432.00

Blender Version
Broken: version: 2.91.0, branch: master, commit date: 2020-11-25 08:34, hash: 0f45cab862
Worked: Haven't tested that yet.

Short description of error

When I save a file, then exit and re-open blender with the file,

My materials and colors disappear
It's stuck on Evee and will not change to Cycles
3 I'm having to remake the entire project, and then I re-open it to work again and I have to start over.

There are probably many more issues that I don't know yet, it seems to be a problem for only me, and I have no idea why its happening

Exact steps for others to reproduce the error

Take the basic donut that I've made and try changing it to cycles.
if it works, do some editing, add some materials and colors, then save the file.
Re-open it and it's bugged.

Doughnut.blend1

Doughnut.blend

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: GeForce GTX 1050 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 432.00 **Blender Version** Broken: version: 2.91.0, branch: master, commit date: 2020-11-25 08:34, hash: `0f45cab862` Worked: Haven't tested that yet. **Short description of error** When I save a file, then exit and re-open blender with the file, 1. My materials and colors disappear 2. It's stuck on Evee and will not change to Cycles 3 I'm having to remake the entire project, and then I re-open it to work again and I have to start over. There are probably many more issues that I don't know yet, it seems to be a problem for only me, and I have no idea why its happening **Exact steps for others to reproduce the error** 1. Take the basic donut that I've made and try changing it to cycles. 2. if it works, do some editing, add some materials and colors, then save the file. 3. Re-open it and it's bugged. [Doughnut.blend1](https://archive.blender.org/developer/F9532076/Doughnut.blend1) [Doughnut.blend](https://archive.blender.org/developer/F9532075/Doughnut.blend)

Trovvie Teller commented

2020-12-27 15:59:58 +01:00

Added subscriber: @Trovvie

Philipp Oeser commented

2020-12-29 16:15:30 +01:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2020-12-29 16:15:30 +01:00

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

Philipp Oeser commented

2020-12-29 16:15:30 +01:00

Cannot reproduce here.

**System Information**
Operating system: Linux-5.9.11-200.fc33.x86_64-x86_64-with-fedora-33-Thirty_Three 64 Bits
Graphics card: GeForce GTX 970M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 455.45.01
version: 2.92.0 Alpha, branch: master, commit date: 2020-12-26 22:50, hash: `rB7916c593048b`

I see there are no materials on the doghnut, but adding those will survive saving/reloading here.

Just to make sure:
Please try with File → Defaults → Load Factory Settings to see if you still can reproduce this issue.
Please try this in a fresh 2.92 build from https://builder.blender.org/download/

Cannot reproduce here. ``` **System Information** Operating system: Linux-5.9.11-200.fc33.x86_64-x86_64-with-fedora-33-Thirty_Three 64 Bits Graphics card: GeForce GTX 970M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 455.45.01 version: 2.92.0 Alpha, branch: master, commit date: 2020-12-26 22:50, hash: `rB7916c593048b` ``` I see there are no materials on the doghnut, but adding those will survive saving/reloading here. Just to make sure: Please try with File → Defaults → Load Factory Settings to see if you still can reproduce this issue. Please try this in a fresh 2.92 build from https://builder.blender.org/download/

Trovvie Teller commented

2020-12-30 08:00:07 +01:00

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

Trovvie Teller commented

2020-12-30 08:00:07 +01:00

I have installed the newest build and tried to load up my save file. It is still bugged, and though my engine is set to cycles, I am stuck on Eevee.

I have asked a friend to open these files on their PC, and it worked fine. I have no clue why it's bugged on mine :(

Any way to fix it?

I'm willing to screenshare on discord

I have installed the newest build and tried to load up my save file. It is still bugged, and though my engine is set to cycles, I am stuck on Eevee. I have asked a friend to open these files on their PC, and it worked fine. I have no clue why it's bugged on mine :( Any way to fix it? I'm willing to screenshare on discord

Robert Guetzkow commented

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

Added subscriber: @rjg

Robert Guetzkow commented

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

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

Robert Guetzkow commented

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

Can't reproduce either. I would suggest you rename C:\Users\<your username>\AppData\Roaming\Blender Foundation\Blender\2.91 and then try again.

If it still doesn't work, then open Blender's installation directory and double click on the blender_debug_log.cmd. This will start Blender in debug mode and create log files. Try to make Blender fail to switch render engines again or fail to load the file properly. Once it does, close Blender. 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.

Can't reproduce either. I would suggest you rename `C:\Users\<your username>\AppData\Roaming\Blender Foundation\Blender\2.91` and then try again. If it still doesn't work, then open Blender's installation directory and double click on the `blender_debug_log.cmd`. This will start Blender in debug mode and create log files. Try to make Blender fail to switch render engines again or fail to load the file properly. Once it does, close Blender. 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. ![2019_12_04_upload_icon_developer_blender_org.png](https://archive.blender.org/developer/F8190038/2019_12_04_upload_icon_developer_blender_org.png)

Trovvie Teller commented

2021-01-02 05:10:43 +01:00

The path is already with the same name.

Log Files:
blender_debug_output.txt

blender_system_info.txt

![image.png](https://archive.blender.org/developer/F9546075/image.png) The path is already with the same name. Log Files: [blender_debug_output.txt](https://archive.blender.org/developer/F9546078/blender_debug_output.txt) [blender_system_info.txt](https://archive.blender.org/developer/F9546079/blender_system_info.txt)

Trovvie Teller commented

2021-01-02 05:11:06 +01:00

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

Robert Guetzkow commented

2021-01-02 09:59:20 +01:00

The log file doesn't contain anything that would indicate an error. Did you try to switch the render engine and it failed while the debug session was in progress or did you only try to save the file? If it is the latter please start double-click on the blender_debug_gpu.cmd, load the file and try to perform one of the operations that fail on your system.

In my last comment I meant rename the folder to something else, like 2.91_original. This prevents Blender from attempting to load anything from the old directory. This is very similar to Philipps suggestion to load the factory settings, but you can switch back to your original user preferences by given the directory its original name, if the user preferences are not the cause of the problem.

The log file doesn't contain anything that would indicate an error. Did you try to switch the render engine and it failed while the debug session was in progress or did you only try to save the file? If it is the latter please start double-click on the `blender_debug_gpu.cmd`, load the file and try to perform one of the operations that fail on your system. In my last comment I meant rename the folder to something else, like `2.91_original`. This prevents Blender from attempting to load anything from the old directory. This is very similar to Philipps suggestion to load the factory settings, but you can switch back to your original user preferences by given the directory its original name, if the user preferences are not the cause of the problem.

Robert Guetzkow commented

2021-01-02 09:59:31 +01:00

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

Trovvie Teller commented

2021-01-02 10:54:36 +01:00

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

Trovvie Teller commented

2021-01-02 10:54:36 +01:00

Yes I tried to switch render engines and it still doesn't work.
I've tried renaming the folder as well, also doesn't work. It did however change back to factory settings. Blender is still broken. This is also the case with my fresh install of 2.83 LTS from the windows store. I have no idea what's happening here.

Yes I tried to switch render engines and it still doesn't work. I've tried renaming the folder as well, also doesn't work. It did however change back to factory settings. Blender is still broken. This is also the case with my fresh install of 2.83 LTS from the windows store. I have no idea what's happening here.

Trovvie Teller commented

2021-01-02 10:54:57 +01:00

I'm willing to screenshare if you'd like

Robert Guetzkow commented

2021-01-02 11:06:50 +01:00

@Trovvie For liability and privacy reasons I wouldn't want you to screenshare or do anything that requires remote access to your machine. You could upload a (short) screen recording of the issue you're describing though.

Trovvie Teller commented

2021-01-02 13:42:42 +01:00

I was thinking more of discord screen share and no remote access, but yeah I understand.

https://i.imgur.com/wGzmgtM.gif

I was thinking more of discord screen share and no remote access, but yeah I understand. https://i.imgur.com/wGzmgtM.gif

Robert Guetzkow commented

2021-01-02 14:22:47 +01:00

You have configured that Cycles should use the GPU as Device in the project. It's grayed out because you haven't selected CUDA or OptiX in the user preferences, at least that is what appears to be happening. Please try the following:

Open the user preferences (Edit > Preferences).
Switch to the System tab.
In Cycles Render Devices select the CUDA tab and save the preferences.
Close the preferences window.

You have configured that Cycles should use the GPU as *Device* in the project. It's grayed out because you haven't selected CUDA or OptiX in the user preferences, at least that is what appears to be happening. Please try the following: - Open the user preferences (*Edit > Preferences*). - Switch to the *System* tab. - In *Cycles Render Devices* select the *CUDA* tab and save the preferences. - Close the preferences window.

Trovvie Teller commented

2021-01-03 05:01:52 +01:00

This isn't the problem, I've tested it with enabling as well. The option is greyed out as I had reset user preferences.
The render engine isn't the only problem, materials, colors and other options also do not work.

I've tried doing what you said and that has also not helped.

This isn't the problem, I've tested it with enabling as well. The option is greyed out as I had reset user preferences. The render engine isn't the only problem, materials, colors and other options also do not work. I've tried doing what you said and that has also not helped.

Falk David commented

2021-01-18 12:13:34 +01:00

Added subscriber: @filedescriptor

Falk David commented

2021-01-18 12:13:34 +01:00

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

Falk David commented

2021-01-18 12:13:34 +01:00

Is this still an issue? Have you tried the latest builds from https://builder.blender.org?

Trovvie Teller commented

2021-01-21 04:02:56 +01:00

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

Trovvie Teller commented

2021-01-21 04:02:56 +01:00

Yes, I've tried the new build as well. Still an issue.

Germano Cavalcante commented

2022-02-16 15:55:15 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2022-02-16 15:55:15 +01:00

Changed status from 'Needs Triage' to: 'Archived'

Germano Cavalcante closed this issue

2022-02-16 15:55:15 +01:00

Germano Cavalcante commented

2022-02-16 15:55:15 +01:00

This report has been open for a long time with no progress.

I downloaded the files but the steps are inconsistent. For example "Take the basic donut that I've made and try changing it to cycles", both files have Cycles as the engine set.

In #84178#1085586, @Trovvie wrote:
(...)
https://i.imgur.com/wGzmgtM.gif

I took a look at this video and it didn't show anything that could help identify the problem.

3D view navigation doesn't trigger the save option when closing, so there's no point in orbiting the scene that much.
You didn't save the file on closing, so what was the point of that part in the video?
The Doughnut.blend file had Cycles as engine set.

About materials and colors disappearing, could they have been saved without "users" or without the "fake user" option? When saving and reopening the file, they are automatically deleted.
See https://docs.blender.org/manual/en/latest/render/materials/assignment.html?highlight=fake%20user#deleting-a-material

While this can be a real issue, it is only happening to a few people so far. And to troubleshoot it developers needs to have direct access to hardware. And even then it is not clear whether if it's really a bug on Blender side...
So thanks for the report, but doesn't look like we can solve this issue.

This report has been open for a long time with no progress. I downloaded the files but the steps are inconsistent. For example `"Take the basic donut that I've made and try changing it to cycles"`, both files have Cycles as the engine set. > In #84178#1085586, @Trovvie wrote: > (...) > https://i.imgur.com/wGzmgtM.gif I took a look at this video and it didn't show anything that could help identify the problem. 1. 3D view navigation doesn't trigger the save option when closing, so there's no point in orbiting the scene that much. 2. You didn't save the file on closing, so what was the point of that part in the video? 3. The `Doughnut.blend` file had `Cycles` as engine set. About materials and colors disappearing, could they have been saved without "users" or without the "fake user" option? When saving and reopening the file, they are automatically deleted. See https://docs.blender.org/manual/en/latest/render/materials/assignment.html?highlight=fake%20user#deleting-a-material While this can be a real issue, it is only happening to a few people so far. And to troubleshoot it developers needs to have direct access to hardware. And even then it is not clear whether if it's really a bug on Blender side... So thanks for the report, but doesn't look like we can solve this issue.

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Saving a blender file is bugged #84178