Blender 2.78 crashes after loading data from a blendfile #49856

New Issue

Marc · 2016-10-27T14:36:25+02:00

Marc commented

2016-10-27 14:36:25 +02:00

System Information
Windows 7 64bit, NVIDIA Quadro K3100M

Blender Version
Broken: 2.78a
Worked: 2.77a

Short description of error

Blender 2.78 crashes after loading data from a blendfile

Exact steps for others to reproduce the error

I'm importing data from another blendfile as follows:

  def import_from_file(filepath):
      with bpy.data.libraries.load(filepath) as (data_from, data_to):
          collections = 'objects', 'groups', 'materials'
          for collection_name in collections:
              collection_from = getattr(data_from, collection_name)
              collection_to = getattr(data_to, collection_name)
              for obj in collection_from:
                  collection_to.append(obj) 
          
      for obj in data_to.objects:
          bpy.context.scene.objects.link(obj)

The import works fine but afterwards some API operations crash Blender with Error: EXCEPTION_ACCESS_VIOLATION. For example bpy.ops.object.select_all(action='DESELECT').

This is working correctly in 2.77a.

**System Information** Windows 7 64bit, NVIDIA Quadro K3100M **Blender Version** Broken: 2.78a Worked: 2.77a **Short description of error** Blender 2.78 crashes after loading data from a blendfile **Exact steps for others to reproduce the error** I'm importing data from another blendfile as follows: ``` def import_from_file(filepath): with bpy.data.libraries.load(filepath) as (data_from, data_to): collections = 'objects', 'groups', 'materials' for collection_name in collections: collection_from = getattr(data_from, collection_name) collection_to = getattr(data_to, collection_name) for obj in collection_from: collection_to.append(obj) for obj in data_to.objects: bpy.context.scene.objects.link(obj) ``` The import works fine but afterwards some API operations crash Blender with `Error: EXCEPTION_ACCESS_VIOLATION`. For example `bpy.ops.object.select_all(action='DESELECT')`. This is working correctly in 2.77a.

Marc commented

2016-10-27 14:36:25 +02:00

Changed status to: 'Open'

Marc commented

2016-10-27 14:36:25 +02:00

Added subscriber: @schlamar

blender-admin commented

2016-10-27 14:36:25 +02:00

#49891 was marked as duplicate of this issue

Bastien Montagne commented

2016-10-28 15:45:04 +02:00

Added subscriber: @mont29

Bastien Montagne commented

2016-10-28 15:45:04 +02:00

Please follow our submission template and guidelines and make a complete, valid bug report, with required info, precise description of the issue, precise steps to reproduce it, small and simple .blend and/or other files to do so if needed, etc.

Please follow our submission template and guidelines and make a complete, valid bug report, with required info, precise description of the issue, precise steps to reproduce it, **small and simple** .blend and/or other files to do so if needed, etc.

Marc commented

2016-10-28 16:12:17 +02:00

main.blend

data.blend

Attached two files. Running the main.py script of the main.blend file reproduces this issue.

[main.blend](https://archive.blender.org/developer/F387985/main.blend) [data.blend](https://archive.blender.org/developer/F387986/data.blend) Attached two files. Running the main.py script of the main.blend file reproduces this issue.

Bastien Montagne self-assigned this 2016-10-29 09:31:32 +02:00

Bastien Montagne commented

2016-10-29 09:31:32 +02:00

Confirmed, think the issue here is that data_to.objects holds pointer references to linked data-blocks, but some of those data-blocks may have been copied (and then deleted) during the 'make local' process following linking, for append operation.

Confirmed, think the issue here is that `data_to.objects` holds pointer references to linked data-blocks, but some of those data-blocks may have been copied (and then deleted) during the 'make local' process following linking, for append operation.

Bastien Montagne commented

2016-10-31 14:30:05 +01:00

Added subscriber: @tiles

blender-admin commented

2016-11-01 13:39:31 +01:00

This issue was referenced by 1ee43c5aef

This issue was referenced by 1ee43c5aef03c1a3218163d9450545fdb9ad4482

Bastien Montagne commented

2016-11-01 13:43:06 +01:00

Changed status from 'Open' to: 'Resolved'

Bastien Montagne closed this issue

2016-11-01 13:43:06 +01:00

Marc commented

2016-12-08 12:11:49 +01:00

@mont29 Is there an ETA for the next release including this fix?

Bastien Montagne commented

2016-12-08 12:22:15 +01:00

No, nothing is decided yet, would not happen before two months at least I think…

Marc commented

2017-02-14 15:18:11 +01:00

Changed status from 'Resolved' to: 'Open'

Marc reopened this issue

2017-02-14 15:18:11 +01:00

Marc commented

2017-02-14 15:18:11 +01:00

This is not resolved in 2.78b!

My script to reproduce the issue (see my comment ) is still crashing (Windows 7, 64bit).

This is not resolved in 2.78b! My script to reproduce the issue ([see my comment ](https://developer.blender.org/T49856#401375)) is still crashing (Windows 7, 64bit).

Marc commented

2017-02-14 15:28:45 +01:00

The daily build (930186d) does work. Could it be that this fix didn't make it in the release? :(

The daily build (930186d) does work. Could it be that this fix didn't make it in the release? :(

Bastien Montagne commented

2017-02-14 18:20:01 +01:00

Changed status from 'Open' to: 'Resolved'

Bastien Montagne closed this issue

2017-02-14 18:20:01 +01:00

Bastien Montagne commented

2017-02-14 18:20:01 +01:00

2.78b is a 'performances' release, not a bugfix release. Please wait for 2.79 (and do not reopen reports like that, too!).

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Blender 2.78 crashes after loading data from a blendfile #49856