It seems you are having trouble enabling TK2D support in Unity after following the instructions. Here are a few steps to troubleshoot and resolve the issue:
Ensure TK2D is Installed: Make sure that the 2D Toolkit (TK2D) asset is installed in your Unity project. The option to enable TK2D support in Spine will only appear if TK2D is part of your project.
Check Unity Preferences: Open Unity's Preferences via Edit - Preferences (or Unity - Preferences on Mac). In the Spine section, you should see an option to Define TK2D. If this option is not visible, it might indicate that TK2D is not correctly installed or recognized by Unity.
Manual Define: If the option is still not visible, you can manually add the SPINE_TK2D define to your project settings. Open the ProjectSettings/ProjectSettings.asset file and add SPINE_TK2D to the scriptingDefineSymbols section. It should look something like this:
scriptingDefineSymbols:
1: SPINE_TK2D
Update Unity Package: Ensure you have the latest version of the Spine Unity package. You can download it from Spine Unity Download.
Check for Errors: If you encounter any compile errors, it might be due to the SPINE_TK2D define being set incorrectly. In such cases, you can remove the define manually from the ProjectSettings.asset file and try again.
If you follow these steps and still face issues, please provide more details about the errors or behavior you are experiencing.
