MDW: In progress (Dev-AnimPhys CL 3392820)
When calling GetSkinnedVertexPosition on a skeletal mesh that uses the same skeleton as a different skeletal mesh with a slightly different bone hierarchy, the Editor may crash.
To get this to occur, one skeletal mesh that has some extra bones is imported into the Editor, and a skeleton created for it. The extra bones do not affect the transforms of the main bones. A second skeletal mesh without the extra bones is imported using the same skeleton created for the previous mesh. Both skeletal meshes are then set as the mesh for two different skeletal mesh components in an Actor class. The second skeletal mesh is then set to use the first as the Master Pose.
When the resulting Actor is placed in a level and GetSkinnedVertexPosition is called on the second mesh, the array index out of bounds error can occur, resulting in a crash.
The user who reported the crash has suggested a couple possible solutions on their AnswerHub post.
The Editor crashes due to an index out of bounds error.
The Editor continues running.
Head over to the existing Questions & Answers thread and let us know what's up.