Issue with Spriter2Spine Conversion in Spine Essential

Choukous

Hello,

I am trying to convert .scml files from Spriter Pro (assets from CraftPix.net) to Spine JSON using Spriter2Spine.

With the Trial version of Spine, the conversion worked correctly, but with Spine Essential (latest version), the exported JSON has an incorrect skeleton structure. I have also tried older versions of Spine, and the problem persists. The same .scml files and Spriter2Spine tool result in a skeleton that does not match the original Spriter hierarchy.

The pack I’m working with includes animations and modular assets (AI, EPS, PNG, Spriter), and I need to modify them for Unity 6.

Has anyone encountered this issue, or is there a recommended workaround to make Spriter2Spine output compatible with the latest Spine Essential?

Thank you for your help!

Spinebot

It seems that the issue you're experiencing with the Spriter2Spine conversion tool might be related to the tool producing invalid data, as mentioned in the context. This could be why the JSON skeleton structure is incorrect when using Spine Essential. One potential workaround is to ensure that the versions of the Spine Editor and the runtime you are using are compatible, as mismatched versions can lead to import issues. Additionally, you might want to check if there are any updates or alternative tools available for converting Spriter files to Spine format. If the problem persists, consider reaching out with your project files to the support team at contact@esotericsoftware.com for further assistance.

Choukous

EDIT – Solution found (strange behavior):

After further investigation, I discovered that the issue was entirely related to the Spine version being used.

Here are the versions I tested:

4.2.43 (latest stable) → Does NOT work.

3.7.94 → Does NOT work.

4.3.39 (latest beta) → Works perfectly!

At first, I was confused because the Trial version of Spine worked correctly with Spriter2Spine, while my Essential license did not. After some digging, I realized that the Trial was actually running version 4.3.39 (latest beta) by default.

When I installed the beta version on my Essential license, the conversion started working immediately.

It doesn’t make much sense that the stable release fails while the beta works, but for now, using 4.3.39 beta solves the issue completely.

Hopefully, this helps anyone running into the same problem!