Yep i see , but i think we need a older version. To bad, we will update the run time .

Thank you for your time Nate

Edit : Maybe it's possible to send us a older version ? or not ?

I'm wondering, other than meshes and paths, what changed in the JSON format that would cause this to break.

Sorry, the old system is inflexible, it isn't possible to make the older versions available.

Pharan, I'm not sure it's a JSON problem. The JSON should not have changed recently. It could be a bug in the handling of submeshes, though I don't know how old is the runtime with the problem.

Ok thanks Nate. We will update the runtime and keep you in touch

Ok we update the runtime, we don't have any error message, but for some export when we switch animation during run time we have a superposition. The two animation are visible in the same time .... no error message, it's very strange !

Woa, I'm not sure what would cause that!

Actually, it's when we have a multiple attachement for one bone.

When we do that we have superposition and we can't switch animation during run time. It's weird because , we don't have this problem before

I guess the mesh isn't getting updated correctly, it somehow gets a set of vertices for the skeleton twice. Can you email a simple example Unity project to contact@esotericsoftware.com?

Yep sure, I post when i send the email

I fixed a problem yesterday regarding submeshes with multi page atlases in spine-unity and spine-tk2d, maybe it also fixed this issue?

I think ! I will test and report.