UUM-142427
Fixed in 6000.6.0b1Mentioned in 17 release notes.
First fixed in 6000.6.0b1 (Jun 23, 2026); relisted in 16 later releases.
| Version | Section | Risk | Impact | Note |
|---|---|---|---|---|
| 6000.6.0b9 | Fixes Animation | Fix | Fixed MecanimDataWasBuilt assertion when building blend tree with a legacy AnimationClip. | |
| 6000.6.0b9 | Fixes Animation | Fix | Fixed MecanimDataWasBuilt assertion when switching ModelImporter rig type to legacy. | |
| 6000.6.0b8 | Fixes Animation | Fix | Fixed MecanimDataWasBuilt assertion when building blend tree with a legacy AnimationClip. | |
| 6000.6.0b8 | Fixes Animation | Fix | Fixed MecanimDataWasBuilt assertion when switching ModelImporter rig type to legacy. | |
| 6000.7.0a4 | Fixes Animation | Fix | Fixed MecanimDataWasBuilt assertion when building blend tree with a legacy AnimationClip. | |
| 6000.7.0a4 | Fixes Animation | Fix | Fixed MecanimDataWasBuilt assertion when building blend tree with a legacy AnimationClip. | |
| 6000.6.0b7 | Fixes Animation | Fix | Fixed MecanimDataWasBuilt assertion when building blend tree with a legacy AnimationClip. | |
| 6000.6.0b7 | Fixes Animation | Fix | Fixed MecanimDataWasBuilt assertion when building blend tree with a legacy AnimationClip. | |
| 6000.6.0b7 | Fixes Animation | Fix | Fixed MecanimDataWasBuilt assertion when switching ModelImporter rig type to legacy. | |
| 6000.5.7f1 | Fixes Animation | Fix | Fixed MecanimDataWasBuilt assertion when building blend tree with a legacy AnimationClip. | |
| 6000.6.0b6 | Fixes Animation | Fix | Fixed MecanimDataWasBuilt assertion when switching ModelImporter rig type to legacy. | |
| 6000.6.0b5 | Fixes Animation | Fix | Fixed MecanimDataWasBuilt assertion when switching ModelImporter rig type to legacy. | |
| 6000.6.0b4 | Fixes Animation | Fix | Fixed MecanimDataWasBuilt assertion when switching ModelImporter rig type to legacy. | |
| 6000.6.0b3 | Fixes Animation | Fix | Fixed MecanimDataWasBuilt assertion when switching ModelImporter rig type to legacy. | |
| 6000.6.0b2 | Fixes Animation | Fix | Fixed MecanimDataWasBuilt assertion when switching ModelImporter rig type to legacy. | |
| 6000.6.0b1 | Fixes Animation | Fix | Fixed MecanimDataWasBuilt assertion when switching ModelImporter rig type to legacy. | |
| 6000.6.0b1 | Fixes Animation | Fix | Fixed MecanimDataWasBuilt assertion when switching ModelImporter rig type to legacy. |