Path Animator Script doesn't work properly in INDEXED Color Mode

[Gasparoken]

How to reproduce the bug:

• Create a INDEXED sprite, transparent layer.
• Change the transparentColor. in Sprite > Properties to Index = 1.
• Select all the canvas with Cmd+A and delete all the black color.
• Draw a path with black color (index = 0).
• Name the layer as PATH.
• Add layer with some drawing (the object to animate).
• Select both layers and run path animation with a 'Rotation: Path Track' option
• Press 'Animate it'

Result: a corrupt image is created for the animation.