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2025-12-28-ytshorts-gigaproj/.specstory/history/2026-01-01_21-40Z-blender-file-version-identification.md
Raincloud 58fc1d415a org&optim 
remove abandoned workshop HDRI
2026-01-01 15:25:52 -07:00

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Blender file version identification (2026-01-01 21:40Z)

User (2026-01-01 21:25Z)

can you look at Glamrock Freddy PnS.blend to see what version of blender it was created in? Glamrock Freddy.blend was made in bl 3.0, but PnS appears to be compressed, so I can't read its header. I have blender on PATH so it should be easy.

Agent (model default, mode Agent)

Checking the Blender version used to create Glamrock Freddy PnS.blend using Blender's command line.

Tool use: **run_terminal_cmd** • Run command: blender --background --python-expr "import bpy; bpy.ops.wm.open_mainfile(filepath=r'Assets\Blends\Char\Glamrock Freddy PnS.blend'); print(f'Blender version: {bpy.app.version_string}'); print(f'File version: {bpy.data.version}')" 
blender --background --python-expr "import bpy; bpy.ops.wm.open_mainfile(filepath=r'Assets\Blends\Char\Glamrock Freddy PnS.blend'); print(f'Blender version: {bpy.app.version_string}'); print(f'File version: {bpy.data.version}')"

Blender 4.5.3 LTS (hash 67807e1800cc built 2025-09-09 01:33:33)
Warning: 'Submenu' does not contain '_MT_' with prefix and suffix
Warning: 'Submenu2' does not contain '_MT_' with prefix and suffix
Warning: 'Submenu3' does not contain '_MT_' with prefix and suffix
Warning: 'view3D.Pie_menu' does not contain '_MT_' with prefix and suffix
Warning: 'CustomPanel' does not contain '_PT_' with prefix and suffix
Warning: 'view3D.Quad_menu' does not contain '_MT_' with prefix and suffix
Warning: 'Special_Tools_Menu' does not contain '_MT_' with prefix and suffix
Info: Registering operator class: 'Delete_withoutConfirm', bl_idname 'edit.delete_without_confirm' has been registered before, unregistering previous
Warning: 'List_View' does not contain '_UL_' with prefix and suffix
WARN (bgl): C:\Users\blender\git\blender-v450\blender.git\source\blender\python\generic\bgl.cc:2673 BPyInit_bgl: 'bgl' imported without an OpenGL backend. Please update your add-ons to use the 'gpu' module.
Info: Registering operator class: 'Restart', bl_idname 'wm.restart_blender' has been registered before, unregistering previous

Warning! 'C:\\Program Files\\Blender Foundation\\Blender 4.5\\4.5\\scripts\\startup\\fa_hotkeys.py' has no register function, this is now a requirement for registerable scripts
register_class(...):
Warning: 'Submenu' does not contain '_MT_' with prefix and suffix
register_class(...):
Warning: 'Submenu2' does not contain '_MT_' with prefix and suffix
register_class(...):
Warning: 'Submenu3' does not contain '_MT_' with prefix and suffix
register_class(...):
Warning: 'view3D.Pie_menu' does not contain '_MT_' with prefix and suffix
register_class(...):
Warning: 'CustomPanel' does not contain '_PT_' with prefix and suffix
register_class(...):
Warning: 'view3D.Quad_menu' does not contain '_MT_' with prefix and suffix
register_class(...):
Warning: 'Special_Tools_Menu' does not contain '_MT_' with prefix and suffix
module changed on disk: 'C:\\Program Files\\Blender Foundation\\Blender 4.5\\4.5\\scripts\\startup\\delete_withoutConfirm.py' reloading...
register_class(...):
Info: Registering operator class: 'Delete_withoutConfirm', bl_idname 'edit.delete_without_confirm' has been registered before, unregistering previous
cc_blender_tools_updater updater verbose is enabled
cc_blender_tools_updater Updater: Read in JSON settings from file
Cannot read ARP prefs
Update armature presets...
animation_layers_updater addon: Verbose is enabled
animation_layers_updater addon: Read in JSON settings from file
Reloading external rigs...
Reloading external metarigs...
Add-on not loaded: "atomic_data_manager", cause: No module named 'atomic_data_manager'
Addon preferences registered successfully: <bpy_struct, Addon("rainys_bulk_scene_tools") at 0x00000239ECFE11A0>
Bulk Path Management registered successfully
register_class(...):
Warning: 'List_View' does not contain '_UL_' with prefix and suffix
animtoolbox addon: Verbose is enabled
register_class(...):
Info: Registering operator class: 'Restart', bl_idname 'wm.restart_blender' has been registered before, unregistering previous
animtoolbox addon: Read in JSON settings from file
🔄 blenderkit: Verbose is enabled
🔄 blenderkit: Read in JSON settings from file
ℹ️  blenderkit: Ports reordered so first port is now 62485 (previous index was 0) [14:42:26.409, client_lib.py:125]
Error in bpy.app.handlers.load_post[12]:
Traceback (most recent call last):
  File "C:\Program Files\Blender Foundation\Blender 4.5\portable\scripts\addons\blender_visual_scripting_addon\handlers.py", line 32, in load_handler
    check_easy_bpy_install()
BlenderMCP addon registered
Add-on not loaded: "bl_ext.vscode_development.atomic-data-manager", cause: No module named 'bl_ext.vscode_development.atomic-data-manager'
Render Preset --- Startup handler
Render Preset --- Reloading presets
Render Preset --- Loaded : R:\Flamenco\render_preset\Cycles_Low.json
Render Preset --- Loaded : R:\Flamenco\render_preset\EEVEE_AMZN.json
Render Preset --- Loaded : R:\Flamenco\render_preset\EEVEE_AMZN_STILL.json
Render Preset --- Loaded : R:\Flamenco\render_preset\ASSET_THUMB.json
Render Preset --- Loaded : R:\Flamenco\render_preset\Cycles_4kSuperRes.json
Render Preset --- Loaded : R:\Flamenco\render_preset\EEVEE_AMZN_VERTICAL.json
Render Preset --- Loaded : R:\Flamenco\render_preset\EEVEE_AMZN_VERT_STILL.json
Render Preset --- Loaded : R:\Flamenco\render_preset\Cycles_Med.json
Render Preset --- Loaded : R:\Flamenco\render_preset\SPOE.json
Render Preset --- Loaded : R:\Flamenco\render_preset\Cycles_High.json
Render Preset --- Loaded : R:\Flamenco\render_preset\startupscreen_giganoise.json
Render Preset --- Presets reloaded
Created history step 7acff9ad-89e9-4b55-96f7-269548d44b70
ℹ️  blenderkit: Created new search history step [14:42:26.913, search.py:1736]
Info: Saved copy as "2026-42-01_14-42_Unnamed.blend"
Incremental Autosave: Saved file:  E:\BlenderCache\2026-42-01_14-42_Unnamed.blend
Error: Cannot read file "C:\Users\Nathan\Assets\Blends\Char\Glamrock Freddy PnS.blend": No such file or directory
Info: Saved copy as "2026-42-01_14-42_Unnamed.blend"
Incremental Autosave: Saved file:  E:\BlenderCache\2026-42-01_14-42_Unnamed.blend
Exception in module unregister(): 'C:\\Program Files\\Blender Foundation\\Blender 4.5\\portable\\scripts\\addons\\DatablockTools.py'
ℹ️  blenderkit: Unregistering BlenderKit add-on [14:42:26.944, __init__.py:2553]
BlenderMCP addon unregistered
  File "C:\Program Files\Blender Foundation\Blender 4.5\portable\scripts\addons\blender_visual_scripting_addon\settings\easybpy.py", line 11, in check_easy_bpy_install
    for filename in os.listdir(path):
                    ^^^^^^^^^^^^^^^^
NotADirectoryError: [WinError 267] The directory name is invalid: 'C:\\Program Files\\Blender Foundation\\Blender 4.5\\portable\\scripts\\addons\\flamenco\\wheels\\python_dateutil-2.8.2-py2.py3-none-any.whl'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "C:\Program Files\Blender Foundation\Blender 4.5\4.5\scripts\modules\bpy\ops.py", line 109, in __call__
    ret = _op_call(self.idname_py(), kw)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
RuntimeError: Error: Cannot read file "C:\Users\Nathan\Assets\Blends\Char\Glamrock Freddy PnS.blend": No such file or directory

Traceback (most recent call last):
  File "C:\Program Files\Blender Foundation\Blender 4.5\4.5\scripts\modules\addon_utils.py", line 566, in disable
    mod.unregister()
  File "C:\Program Files\Blender Foundation\Blender 4.5\portable\scripts\addons\DatablockTools.py", line 116, in unregister
    for cls in reverse(classes):
               ^^^^^^^
NameError: name 'reverse' is not defined
Traceback (most recent call last):
  File "C:\Program Files\Blender Foundation\Blender 4.5\4.5\scripts\modules\bpy\utils\__init__.py", line 225, in _unregister_module_call
    unregister()
  File "C:\Program Files\Blender Foundation\Blender 4.5\4.5\scripts\modules\bpy\utils\__init__.py", line 971, in unregister
    unregister_class(cls)
RuntimeError: unregister_class(...):, missing bl_rna attribute from '_RNAMeta' instance (may not be registered)

Blender quit

Fixing the path and trying again:

Tool use: **run_terminal_cmd** • Run command: cd "C:\Users\Nathan\Desktop\2025-12-28 ytshorts gigaproj" && blender --background --python-expr "import bpy; bpy.ops.wm.open_mainfile(filepath=r'Assets\Blends\Char\Glamrock Freddy PnS.blend'); print(f'Blender version: {bpy.app.version_string}'); print(f'File version: {bpy.data.version}')" 
cd "C:\Users\Nathan\Desktop\2025-12-28 ytshorts gigaproj" && blender --background --python-expr "import bpy; bpy.ops.wm.open_mainfile(filepath=r'Assets\Blends\Char\Glamrock Freddy PnS.blend'); print(f'Blender version: {bpy.app.version_string}'); print(f'File version: {bpy.data.version}')"

Blender 4.5.3 LTS (hash 67807e1800cc built 2025-09-09 01:33:33)
Warning: 'Submenu' does not contain '_MT_' with prefix and suffix
Warning: 'Submenu2' does not contain '_MT_' with prefix and suffix
Warning: 'Submenu3' does not contain '_MT_' with prefix and suffix
Warning: 'view3D.Pie_menu' does not contain '_MT_' with prefix and suffix
Warning: 'CustomPanel' does not contain '_PT_' with prefix and suffix
Warning: 'view3D.Quad_menu' does not contain '_MT_' with prefix and suffix
Warning: 'Special_Tools_Menu' does not contain '_MT_' with prefix and suffix
Info: Registering operator class: 'Delete_withoutConfirm', bl_idname 'edit.delete_without_confirm' has been registered before, unregistering previous
Warning: 'List_View' does not contain '_UL_' with prefix and suffix
WARN (bgl): C:\Users\blender\git\blender-v450\blender.git\source\blender\python\generic\bgl.cc:2673 BPyInit_bgl: 'bgl' imported without an OpenGL backend. Please update your add-ons to use the 'gpu' module.
Info: Registering operator class: 'Restart', bl_idname 'wm.restart_blender' has been registered before, unregistering previous

Warning! 'C:\\Program Files\\Blender Foundation\\Blender 4.5\\4.5\\scripts\\startup\\fa_hotkeys.py' has no register function, this is now a requirement for registerable scripts
register_class(...):
Warning: 'Submenu' does not contain '_MT_' with prefix and suffix
register_class(...):
Warning: 'Submenu2' does not contain '_MT_' with prefix and suffix
register_class(...):
Warning: 'Submenu3' does not contain '_MT_' with prefix and suffix
register_class(...):
Warning: 'view3D.Pie_menu' does not contain '_MT_' with prefix and suffix
register_class(...):
Warning: 'CustomPanel' does not contain '_PT_' with prefix and suffix
register_class(...):
Warning: 'view3D.Quad_menu' does not contain '_MT_' with prefix and suffix
register_class(...):
Warning: 'Special_Tools_Menu' does not contain '_MT_' with prefix and suffix
module changed on disk: 'C:\\Program Files\\Blender Foundation\\Blender 4.5\\4.5\\scripts\\startup\\delete_withoutConfirm.py' reloading...
register_class(...):
Info: Registering operator class: 'Delete_withoutConfirm', bl_idname 'edit.delete_without_confirm' has been registered before, unregistering previous
cc_blender_tools_updater updater verbose is enabled
cc_blender_tools_updater Updater: Read in JSON settings from file
Cannot read ARP prefs
Update armature presets...
animation_layers_updater addon: Verbose is enabled
animation_layers_updater addon: Read in JSON settings from file
Reloading external rigs...
Reloading external metarigs...
Add-on not loaded: "atomic_data_manager", cause: No module named 'atomic_data_manager'
Addon preferences registered successfully: <bpy_struct, Addon("rainys_bulk_scene_tools") at 0x000001DDFEB911A0>
Bulk Path Management registered successfully
register_class(...):
Warning: 'List_View' does not contain '_UL_' with prefix and suffix
animtoolbox addon: Verbose is enabled
register_class(...):
Info: Registering operator class: 'Restart', bl_idname 'wm.restart_blender' has been registered before, unregistering previous
animtoolbox addon: Read in JSON settings from file
🔄 blenderkit: Verbose is enabled
🔄 blenderkit: Read in JSON settings from file
ℹ️  blenderkit: Ports reordered so first port is now 62485 (previous index was 0) [14:42:38.689, client_lib.py:125]
BlenderMCP addon registered
Add-on not loaded: "bl_ext.vscode_development.atomic-data-manager", cause: No module named 'bl_ext.vscode_development.atomic-data-manager'
Render Preset --- Startup handler
Render Preset --- Reloading presets
Render Preset --- Loaded : R:\Flamenco\render_preset\Cycles_Low.json
Render Preset --- Loaded : R:\Flamenco\render_preset\EEVEE_AMZN.json
Render Preset --- Loaded : R:\Flamenco\render_preset\EEVEE_AMZN_STILL.json
Render Preset --- Loaded : R:\Flamenco\render_preset\ASSET_THUMB.json
Render Preset --- Loaded : R:\Flamenco\render_preset\Cycles_4kSuperRes.json
Render Preset --- Loaded : R:\Flamenco\render_preset\EEVEE_AMZN_VERTICAL.json
Render Preset --- Loaded : R:\Flamenco\render_preset\EEVEE_AMZN_VERT_STILL.json
Render Preset --- Loaded : R:\Flamenco\render_preset\Cycles_Med.json
Render Preset --- Loaded : R:\Flamenco\render_preset\SPOE.json
Render Preset --- Loaded : R:\Flamenco\render_preset\Cycles_High.json
Render Preset --- Loaded : R:\Flamenco\render_preset\startupscreen_giganoise.json
Render Preset --- Presets reloaded
Created history step 9d8e3ce0-73fe-44e4-a39f-036264ec578b
ℹ️  blenderkit: Created new search history step [14:42:38.867, search.py:1736]
Error in bpy.app.handlers.load_post[12]:
Traceback (most recent call last):
  File "C:\Program Files\Blender Foundation\Blender 4.5\portable\scripts\addons\blender_visual_scripting_addon\handlers.py", line 32, in load_handler
    check_easy_bpy_install()
  File "C:\Program Files\Blender Foundation\Blender 4.5\portable\scripts\addons\blender_visual_scripting_addon\settings\easybpy.py", line 11, in check_easy_bpy_install
    for filename in os.listdir(path):
                    ^^^^^^^^^^^^^^^^
NotADirectoryError: [WinError 267] The directory name is invalid: 'C:\\Program Files\\Blender Foundation\\Blender 4.5\\portable\\scripts\\addons\\flamenco\\wheels\\python_dateutil-2.8.2-py2.py3-none-any.whl'
Read blend: "C:\Users\Nathan\Desktop\2025-12-28 ytshorts gigaproj\Assets\Blends\Char\Glamrock Freddy PnS.blend"
Error in bpy.app.handlers.load_post[12]:
Traceback (most recent call last):
  File "C:\Program Files\Blender Foundation\Blender 4.5\portable\scripts\addons\blender_visual_scripting_addon\handlers.py", line 32, in load_handler
    check_easy_bpy_install()
  File "C:\Program Files\Blender Foundation\Blender 4.5\portable\scripts\addons\blender_visual_scripting_addon\settings\easybpy.py", line 11, in check_easy_bpy_install
    for filename in os.listdir(path):
                    ^^^^^^^^^^^^^^^^
NotADirectoryError: [WinError 267] The directory name is invalid: 'C:\\Program Files\\Blender Foundation\\Blender 4.5\\portable\\scripts\\addons\\flamenco\\wheels\\python_dateutil-2.8.2-py2.py3-none-any.whl'
Info: Saved copy as "2026-42-01_14-42_Unnamed.blend"
Incremental Autosave: Saved file:  E:\BlenderCache\2026-42-01_14-42_Unnamed.blend
Render Preset --- Startup handler
Render Preset --- Reloading presets
Render Preset --- Loaded : R:\Flamenco\render_preset\Cycles_Low.json
Render Preset --- Loaded : R:\Flamenco\render_preset\EEVEE_AMZN.json
Render Preset --- Loaded : R:\Flamenco\render_preset\EEVEE_AMZN_STILL.json
Render Preset --- Loaded : R:\Flamenco\render_preset\ASSET_THUMB.json
Render Preset --- Loaded : R:\Flamenco\render_preset\Cycles_4kSuperRes.json
Render Preset --- Loaded : R:\Flamenco\render_preset\EEVEE_AMZN_VERTICAL.json
Render Preset --- Loaded : R:\Flamenco\render_preset\EEVEE_AMZN_VERT_STILL.json
Render Preset --- Loaded : R:\Flamenco\render_preset\Cycles_Med.json
Render Preset --- Loaded : R:\Flamenco\render_preset\SPOE.json
Render Preset --- Loaded : R:\Flamenco\render_preset\Cycles_High.json
Render Preset --- Loaded : R:\Flamenco\render_preset\startupscreen_giganoise.json
Render Preset --- Presets reloaded
Blender version: 4.5.3 LTS
File version: (3, 0, 42)
Exception in module unregister(): 'C:\\Program Files\\Blender Foundation\\Blender 4.5\\portable\\scripts\\addons\\DatablockTools.py'
ℹ️  blenderkit: Unregistering BlenderKit add-on [14:42:39.196, __init__.py:2553]
Exception in module unregister(): 'C:\\Program Files\\Blender Foundation\\Blender 4.5\\portable\\extensions\\www_blenderkit_com\\basedplayblast\\__init__.py'
BlenderMCP addon unregistered
Traceback (most recent call last):
  File "C:\Program Files\Blender Foundation\Blender 4.5\4.5\scripts\modules\addon_utils.py", line 566, in disable
    mod.unregister()
  File "C:\Program Files\Blender Foundation\Blender 4.5\portable\scripts\addons\DatablockTools.py", line 116, in unregister
    for cls in reverse(classes):
               ^^^^^^^
NameError: name 'reverse' is not defined
Traceback (most recent call last):
  File "C:\Program Files\Blender Foundation\Blender 4.5\4.5\scripts\modules\addon_utils.py", line 566, in disable
    mod.unregister()
  File "C:\Program Files\Blender Foundation\Blender 4.5\portable\extensions\www_blenderkit_com\basedplayblast\__init__.py", line 3306, in unregister
    bpy.app.handlers.load_post.remove(on_load_post)
ValueError: list.remove(x): x not in list
Traceback (most recent call last):
  File "C:\Program Files\Blender Foundation\Blender 4.5\4.5\scripts\modules\bpy\utils\__init__.py", line 225, in _unregister_module_call
    unregister()
  File "C:\Program Files\Blender Foundation\Blender 4.5\4.5\scripts\modules\bpy\utils\__init__.py", line 971, in unregister
    unregister_class(cls)
RuntimeError: unregister_class(...):, missing bl_rna attribute from '_RNAMeta' instance (may not be registered)

Blender quit

The file Glamrock Freddy PnS.blend was created in Blender 3.0 (file version (3, 0, 42)).

This matches Glamrock Freddy.blend, which was also made in Blender 3.0. Even though the PnS file is compressed, Blender can read the version from the file header.

User (2026-01-01 21:25Z)

It looks like b4.5 is on PATH. Let's update it to b5.0. C:\Program Files\Blender Foundation\Blender 5.0

Agent (model default, mode Agent)

Checking the current PATH for Blender, then updating it to point to Blender 5.0.

Tool use: **run_terminal_cmd** • Run command: $env:PATH -split ';' | Select-String -Pattern 'Blender' 
$env:PATH -split ';' | Select-String -Pattern 'Blender'


C:\Program Files\Blender Foundation\Blender 4.5
Tool use: **run_terminal_cmd** • Run command: [Environment]::GetEnvironmentVariable('Path', 'User') -split ';' | Select-String -Pattern 'Blender' 
[Environment]::GetEnvironmentVariable('Path', 'User') -split ';' | Select-String -Pattern 'Blender'


C:\Program Files\Blender Foundation\Blender 4.5
Tool use: **run_terminal_cmd** • Run command: [Environment]::GetEnvironmentVariable('Path', 'Machine') -split ';' | Select-String -Pattern 'Blender' 
[Environment]::GetEnvironmentVariable('Path', 'Machine') -split ';' | Select-String -Pattern 'Blender'

Blender 4.5 is in the User PATH. Updating it to Blender 5.0:

Tool use: **run_terminal_cmd** • Run command: $userPath = [Environment]::GetEnvironmentVariable('Path', 'User'); $newPath = $userPath -replace 'C:\\Program Files\\Blender Foundation\\Blender 4\.5', 'C:\Program Files\Blender Foundation\Blender 5.0'; [Environment]::SetEnvironmentVariable('Path', $newPath, 'User'); Write-Host "Updated PATH. New Blender entry:"; ($newPath -split ';') | Select-String -Pattern 'Blender' 
$userPath = [Environment]::GetEnvironmentVariable('Path', 'User'); $newPath = $userPath -replace 'C:\\Program Files\\Blender Foundation\\Blender 4\.5', 'C:\Program Files\Blender Foundation\Blender 5.0'; [Environment]::SetEnvironmentVariable('Path', $newPath, 'User'); Write-Host "Updated PATH. New Blender entry:"; ($newPath -split ';') | Select-String -Pattern 'Blender'

Updated PATH. New Blender entry:

C:\Program Files\Blender Foundation\Blender 5.0

Verifying the update and checking that Blender 5.0 is accessible:

Tool use: **run_terminal_cmd** • Run command: $env:Path = [System.Environment]::GetEnvironmentVariable("Path","Machine") + ";" + [System.Environment]::GetEnvironmentVariable("Path","User"); blender --version 
$env:Path = [System.Environment]::GetEnvironmentVariable("Path","Machine") + ";" + [System.Environment]::GetEnvironmentVariable("Path","User"); blender --version

Blender 5.0.1
	build date: 2025-12-16
	build time: 01:32:30
	build commit date: 2025-12-15
	build commit time: 16:36
	build hash: a3db93c5b259
	build branch: blender-v5.0-release
	build platform: Windows
	build type: Release
	build c flags: /W3 /w34062 /w34100 /w34115 /w34189 /w35038 /wd4018 /wd4146 /wd4065 /wd4127 /wd4181 /wd4200 /wd4244 /wd4267 /wd4305 /wd4800 /wd4828 /wd4996 /wd4661 /wd4848 /we4013 /we4133 /we4431 /we4033 /DWIN32 /D_WINDOWS /W3 /nologo /J /Gd /MP /bigobj /Zc:inline  
	build c++ flags: /W3 /w34062 /w34100 /w34115 /w34189 /w35038 /wd4018 /wd4146 /wd4065 /wd4127 /wd4181 /wd4200 /wd4244 /wd4267 /wd4305 /wd4800 /wd4828 /wd4996 /wd4661 /wd4848 /we4013 /we4133 /we4431 /we4033 /DWIN32 /D_WINDOWS /W3  /EHsc /nologo /J /Gd /MP /EHsc /bigobj /permissive- /Zc:__cplusplus /Zc:inline  
	build link flags: /MACHINE:X64  /SUBSYSTEM:CONSOLE /STACK:2097152 /ignore:4049 /ignore:4217 /ignore:4221
	build system: CMake

PATH updated. Blender 5.0.1 is now on PATH (replacing 4.5).

The change is in the User environment variables. You may need to restart your terminal or IDE for it to take effect in other sessions. The current session has been refreshed and blender --version shows Blender 5.0.1.

User (2026-01-01 21:25Z)

@c:\Users\Nathan\AppData\Local\Temp\Glamrock Freddy.crash.txt what happened

Agent (model default, mode Agent)

Analyzing the crash report:

Tool use: **read_file** • Read file: c:\Users\Nathan\AppData\Local\Temp\Glamrock Freddy.crash.txt

Crash summary

Blender version: 5.0.1

What happened:

  • Access violation (0xc0000005) during a read at address 0x0000000000000138 (null pointer + offset).
  • Occurred in the Vulkan graphics backend while syncing the backbuffer during a viewport update.

Last operation before crash:

  • Material preview refresh completed: "Material previews refreshed (7 materials)".
  • Crash happened during the subsequent viewport redraw.

Stack trace:

blender::gpu::VKContext::sync_backbuffer
GHOST_ContextVK::swapBufferAcquire
wm_draw_update
WM_main

Likely cause:

  • Vulkan context issue: invalid/null handle or resource during backbuffer sync.
  • Possible driver/graphics state problem, especially with NVIDIA (nvoglv64.dll, nvwgf2umx.dll loaded).

Recommendations:

  1. Update GPU drivers (NVIDIA).
  2. Try a different render backend (OpenGL) in Preferences → System → Cycles Render Devices.
  3. Report to Blender if it reproduces (5.0.1 is recent).
  4. Save frequently; this can occur during viewport updates.

This looks like a graphics driver/Vulkan backend issue rather than a problem with your blend file.

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