Same problem, here the error log
Content is referencing a propID that doesn’t exist propId=‘1800470359764402712’
Model ‘0×082239’: Failed to resolve AimIK bone indices.
Model ‘0×080b24’: Failed to resolve AimIK bone indices.
Model ‘0×08223a’: Failed to resolve AimIK bone indices.
Model ‘0×1658fd’: Failed to resolve AimIK bone indices.
Matrix is not invertible.
Model ‘0×1658fd’: Failed to resolve AimIK bone indices.
Model ‘0×08223a’: Failed to resolve AimIK bone indices.
Model ‘0×082239’: Failed to resolve AimIK bone indices.