Root of the issue here was that two stupid modifiers could create named vgroup CD layers (vgroup editing ones... shame on me :") ). Fix that, and added some versionning code to also fix 'corrupted' blend files created by those so far.
Root of the issue here was that two stupid modifiers could create named vgroup CD layers (vgroup editing ones... shame on me :") ). Fix that, and added some versionning code to also fix 'corrupted' blend files created by those so far.