Hello,

I'm worked since 2 days ago in a character like the "spine boy".
My character is composed with warp deformation, parent's bones, and little scale and rotation.
The animation is just a idle with 65 frame. That all.

Just before the "bug's Spine" I tried to integrate light on my character, with "aditive effect" in the Setup mode.
The result was good, so I decided to animate the light on my character in Animate mode.
The light is just animate with warp deformation, and little alpha's color effect. Just here, no problem, the animation of light is working very well.

After the good result, I create another light additve effect with a "copy-past" of my first's picture of light. I rename my 2 news light in Setup mode. The bone's light is the same for my 2 news light.
But, when I was in Animate mode, in the first frame, all of my light was "moved" . It was so stange, I decided to remove all of them, to their good location, and continue my animation.
After my work, I saved and quite Spine normaly.

Yesterday I open my character again, and what?? Spine wouldn't open it... No "log message" but just a message: "sorry, Spine cannot open the projet" something like this... All my bones, pictures and animation was delete. Nothing, like a new projet (after 2 days to making my character, I was desperate)
I immediatly trying to open my backup work of my character, but for all of them, Spine couldn't open them...

It's was a very big work, and I afraid to loose my character...

What was happening? It's because of additive light effect? My work is corrupt? How can I get back my work? It's so stange...

Thank you Shiu, it sound great like this. Maybe you can fixe this ;-;
For now, I can have access to my work, I have to wait Monday. So I send you a big e-mail at this moment. Thank you for you quickly answer.

Hi!
I opened many backup of my character's scene, and finaly, I realize why Spine is buging with my scene

In fact, the old scene with a "animate additive light" are not available beacause:
when there are more of 1 asset with a "additive effect" on it, Spine crash without message log.

I try to reproduce this crash, and for all of my test, Spine doesn't like when there are 2 "additive asset" animate in the same scene...

So, with 1 ligth effect, it's work '-'