Blender Crashes while moving Sliders #51416

New Issue

Marc Zbinden · 2017-05-04T21:02:49+02:00

Marc Zbinden commented

2017-05-04 21:02:49 +02:00

System Information
Windows 10 Pro 64bit
Intel Core i7-2600K CPU
16GB RAM
Geforce GTX980

Blender Version
Broken: 2.78c Date: 2017-02-24 14:33
Engine: Cycles
Worked: (optional)

A Crash ocures when a Slider is moved

Step1: Create a mesh with a texture
Step2: Add a Convertor - Colorramp to the colorinput of the Defuse Shader
Step3: Add a mapping node to the input of the colorramp
Step4: Add a Texturecoordinate node to the input of the mapping node
Step5: I added a second colorramp between the first colorramp and the Defuse shader because this seams to increases the chance that the error appears. But it's not necessary.
Step6: Change displaymode of 3D View to Material so that the Colors are visible. I'm not sure if that is necessary. It had also once crashed when the mode where set to rendered. I didn't tried it in solidmode.
Step7: Adding some colorpoints to the colorramp and moving them around. Then I closed the nodeeditor and swaped to the properties area on the right where the sliders also are under the materialsettings
After a minute of moving sliders around the crash appeared. Sometimes it crashes just after one second of moving a slider. Once it crashed just after I connected the colorramp to an other node.
This is a Screenshot of the VisualBasic Debugger

Sometimes it is possible to click on Continue and Blender works further like nothing happened.
Otherwise the Error repeats endlessly.
This is my Testfile:
Test.blend
It's only a new File with a rectangular mesh and a texture.

I tried different things to get around this error.
I tried different rendersettings.
I lowered the polrate of my mouse from 1000 to 250.
I tried different graphics drivers.
My first Blender version was 2.68 I think. And I'm not sure when the error first appeared. But I'm sure that it also happened in the last Version witch would have been 2.77
I use Blender also on an other machine. On a minimac with bootcamp and windows 10. The Error never occured there.

I really hope this will be fixed!

Thank you!

**System Information** Windows 10 Pro 64bit Intel Core i7-2600K CPU 16GB RAM Geforce GTX980 **Blender Version** Broken: 2.78c Date: 2017-02-24 14:33 Engine: Cycles Worked: (optional) A Crash ocures when a Slider is moved Step1: Create a mesh with a texture Step2: Add a Convertor - Colorramp to the colorinput of the Defuse Shader Step3: Add a mapping node to the input of the colorramp Step4: Add a Texturecoordinate node to the input of the mapping node Step5: I added a second colorramp between the first colorramp and the Defuse shader because this seams to increases the chance that the error appears. But it's not necessary. Step6: Change displaymode of 3D View to Material so that the Colors are visible. I'm not sure if that is necessary. It had also once crashed when the mode where set to rendered. I didn't tried it in solidmode. Step7: Adding some colorpoints to the colorramp and moving them around. Then I closed the nodeeditor and swaped to the properties area on the right where the sliders also are under the materialsettings After a minute of moving sliders around the crash appeared. Sometimes it crashes just after one second of moving a slider. Once it crashed just after I connected the colorramp to an other node. This is a Screenshot of the VisualBasic Debugger ![Error1.JPG](https://archive.blender.org/developer/F587811/Error1.JPG) Sometimes it is possible to click on Continue and Blender works further like nothing happened. Otherwise the Error repeats endlessly. This is my Testfile: [Test.blend](https://archive.blender.org/developer/F587826/Test.blend) It's only a new File with a rectangular mesh and a texture. I tried different things to get around this error. I tried different rendersettings. I lowered the polrate of my mouse from 1000 to 250. I tried different graphics drivers. My first Blender version was 2.68 I think. And I'm not sure when the error first appeared. But I'm sure that it also happened in the last Version witch would have been 2.77 I use Blender also on an other machine. On a minimac with bootcamp and windows 10. The Error never occured there. I really hope this will be fixed! Thank you!

Marc Zbinden commented

2017-05-04 21:02:49 +02:00

Changed status to: 'Open'

Marc Zbinden commented

2017-05-04 21:02:49 +02:00

Added subscriber: @MarcZbinden

Vuk Gardašević commented

2017-05-04 23:11:56 +02:00

Added subscriber: @VukGardasevic

Vuk Gardašević commented

2017-05-04 23:11:56 +02:00

I can confirm this bug with the provided blend. Moving the color sliders around moderately fast will eventually crash Blender.

ERROR: Python context internal state bug. this should not happen!
ERROR: Python context internal state bug. this should not happen!
ERROR: Python context internal state bug. this should not happen!
Error: EXCEPTION_ACCESS_VIOLATION

I have a similar issue with Blender Color wheel on Win 7 64 bit , R7 360 build f1ada2e

Default cube > switch to Cycles > Add a material > In the Material tab of Properties editor find the Surface > Color and click on it. The Color widget will show up. . The combination of moving the mouse moderately fast in the color wheel while holding the left button with the occasional release, and then resuming holding it down will lead to the crash - that can on my machine be replicated reliably. Sometimes helps going out the widget border so the position gets clamped from time to time.

At times, it crashes really fast, sometimes after several tries of 10 seconds. Scaling the UI helps with not loosing the mouse focus

I can't get the exact sequence of the crash sometimes a few fast clicks can trigger the bug, in other cases circular movements in a relatively small area of the wheel - but it is probably related on how the update is handled memory wise.

ED_undo_push: Color
ED_undo_push: Color
ED_undo_push: Input value used for unconnected socket
ED_undo_push: Color
Memoryblock free: pointer not in memlist
Error: EXCEPTION_ACCESS_VIOLATION

ED_undo_push: Color
ED_undo_push: Color
ED_undo_push: Color
ED_undo_push: Color
ED_undo_push: Color
ED_undo_push: Color
ED_undo_push: Color
ED_undo_push: Color
Memoryblock ButsTextureUser: double free

ED_undo_push: Color
Memoryblock mesh: Additional error in header
Memoryblock Additional error in header: error in header

This bug show that is not only related to the Color /Wheel Picker Widget but also to the slider of the color ramp.

I can confirm this bug with the provided blend. Moving the color sliders around moderately fast will eventually crash Blender. ``` ERROR: Python context internal state bug. this should not happen! ERROR: Python context internal state bug. this should not happen! ERROR: Python context internal state bug. this should not happen! Error: EXCEPTION_ACCESS_VIOLATION ``` I have a similar issue with Blender Color wheel on Win 7 64 bit , R7 360 build `f1ada2e` Default cube > switch to Cycles > Add a material > In the Material tab of Properties editor find the Surface > Color and click on it. The Color widget will show up. . The combination of moving the mouse moderately fast in the color wheel while holding the left button with the occasional release, and then resuming holding it down will lead to the crash - that can on my machine be replicated reliably. Sometimes helps going out the widget border so the position gets clamped from time to time. At times, it crashes really fast, sometimes after several tries of 10 seconds. Scaling the UI helps with not loosing the mouse focus I can't get the exact sequence of the crash sometimes a few fast clicks can trigger the bug, in other cases circular movements in a relatively small area of the wheel - but it is probably related on how the update is handled memory wise. ``` ED_undo_push: Color ED_undo_push: Color ED_undo_push: Input value used for unconnected socket ED_undo_push: Color Memoryblock free: pointer not in memlist Error: EXCEPTION_ACCESS_VIOLATION ED_undo_push: Color ED_undo_push: Color ED_undo_push: Color ED_undo_push: Color ED_undo_push: Color ED_undo_push: Color ED_undo_push: Color ED_undo_push: Color Memoryblock ButsTextureUser: double free ED_undo_push: Color Memoryblock mesh: Additional error in header Memoryblock Additional error in header: error in header ``` This bug show that is not only related to the Color /Wheel Picker Widget but also to the slider of the color ramp.

Adam Friesen commented

2017-05-11 01:44:29 +02:00

Added subscriber: @Ace_Dragon

Adam Friesen commented

2017-05-11 01:44:29 +02:00

I will add to this, the fact that Blender can crash while preview rendering on any rapid change in any value (it doesn't matter if it's on the color ramp node or not).

This has also been an issue with the Cycles' rendered view for years. I thought about reporting it before, but the bug was hard to pin down until I found this entry.

I will add to this, the fact that Blender can crash while preview rendering on any rapid change in any value (it doesn't matter if it's on the color ramp node or not). This has also been an issue with the Cycles' rendered view for years. I thought about reporting it before, but the bug was hard to pin down until I found this entry.

William Culver commented

2017-07-06 13:27:59 +02:00

Added subscriber: @cedeon

blender-admin commented

2017-09-13 17:12:19 +02:00

This issue was referenced by blender/cycles@329740882b

This issue was referenced by blender/cycles@329740882b7a69536255fd20e144f59eb9e25bbc

blender-admin commented

2017-09-13 17:12:19 +02:00

This issue was referenced by 7aafa32c09

This issue was referenced by 7aafa32c09bb93b44f746743b67735b1ae73ab21

Sergey Sharybin self-assigned this 2017-09-13 17:15:42 +02:00

Sergey Sharybin commented

2017-09-14 14:06:43 +02:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue

2017-09-14 14:06:43 +02:00

Joe commented

2018-01-12 23:49:06 +01:00

Added subscriber: @joeBob44

Joe commented

2018-01-12 23:49:06 +01:00

System Information:
Windows 10
Intel Core i7-7700 CPU
16GB RAM
Geforce GTX1080

Blender Version: 2.79
Engine: Cycles
Date of crashes: Since installing to present 2018/01/13

I have been getting random crashes in blender whilst moving sliders, in a manner similar to what has been described above. Is the any fix for this yet as for me the crashes mean i loose everything I've done after the last save. As above the crashes seem to happened whilst moving sliders (e.g. the IOR slider for the glass shader but could be almost any slider). It seems to be completely random as can happen after a few seconds of moving a slider to hours of working with frequent usage of sliders. I have only noticed crashes in blender and no other program so far.

System Information: Windows 10 Intel Core i7-7700 CPU 16GB RAM Geforce GTX1080 Blender Version: 2.79 Engine: Cycles Date of crashes: Since installing to present 2018/01/13 I have been getting random crashes in blender whilst moving sliders, in a manner similar to what has been described above. Is the any fix for this yet as for me the crashes mean i loose everything I've done after the last save. As above the crashes seem to happened whilst moving sliders (e.g. the IOR slider for the glass shader but could be almost any slider). It seems to be completely random as can happen after a few seconds of moving a slider to hours of working with frequent usage of sliders. I have only noticed crashes in blender and no other program so far.

Brecht Van Lommel commented

2018-01-12 23:53:15 +01:00

Added subscriber: @brecht

Brecht Van Lommel commented

2018-01-12 23:53:15 +01:00

This bug was fixed after the 2.79 release, so you would need to test the daily build or the upcoming 2.79a to confirm if it's fixed:
https://builder.blender.org/download/

If you do still find this bug, please open a new report.

This bug was fixed after the 2.79 release, so you would need to test the daily build or the upcoming 2.79a to confirm if it's fixed: https://builder.blender.org/download/ If you do still find this bug, please open a new report.

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Blender Crashes while moving Sliders #51416