• Runtimes
  • Can't use 3.8 plug in for the 3.7 animations?

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Hello,

today I met such problem with animations after updating my spine to the 3.8 version.
Do I have to reimport ALL animations I made in the 3.7 version to the 3.8? O_O

Yes, Spine major versions (3.6, 3.7, 3.8, etc.) are not compatible with each other. The Spine Editor version you export from must always match the Spine Runtimes version. That exports from Spine Editor 3.6 (mostly) worked with Spine Runtimes 3.7 was merely a coincidence. More info here:

Settings - Spine User Guide: Version
Spine editor and runtime version management

You can use the Spine CLI to convert Spine 3.7 projects to Spine 3.8 projects. See

Export - Spine User Guide: Command line