It seems like you are encountering an issue with creating a new Spine GameObject in Unity using Spine 3.8. Here are a few steps to troubleshoot and resolve the issue:
Version Compatibility: Ensure that the Spine Editor version you are using to export your skeleton files matches the Spine-Unity runtime version. For example, if you are using Spine 3.8.99, you should use the latest Spine-Unity runtime of version 3.8 from the download page. Mismatched versions can cause import errors.
File Extensions: Make sure that your exported files have the correct extensions. For Unity, the atlas file should have the extension .atlas.txt. Incorrect file extensions can lead to import issues.
Re-export Assets: Sometimes re-exporting the assets can resolve issues. Ensure that you are exporting the skeleton as a .json file and that all necessary files (.json, .atlas.txt, and .png) are correctly exported and placed in the Unity project.
Update to Latest Patch Version: If you are using an older patch version of Spine 3.8, consider updating to the latest patch version (e.g., 3.8.99) and re-exporting your assets. This can resolve bugs present in earlier versions.
Check Export Settings: Verify that your export settings in Spine are correctly configured. Ensure that the settings match the requirements for Unity import.
Minimal Unity Project: If the problem persists, create a minimal Unity project with the problematic exported assets and test if the issue still occurs. This can help isolate the problem.
If these steps do not resolve the issue, you can send your Spine project and exported assets to contact@esotericsoftware.com for further investigation.
