I was unable to reproduce your issue. What I've done:
- Export your Spine project with Spine Professional version 4.2 to both .json and .skel (also exported the atlas). Generated files are
test-data.json, test-data-binary.json, test.atlas and test.png.
- Opened our Spine-UE example project
- Dropped the files into the Content Browser
- Created a new level, and a new actor inside the level
- Added a
SpineSkeletonRenderer and SpineSkeletonAnimation component to the actor
- Set the Atlas property of the
SpineSkeletonAnimation component to test
- Set the Skeleton Data property of the
SpineSkeletonAnimation component to test-data (and test-data-binary in another test, to check if binary data has issues)
- Set the Preview Animation property of the
SpineSkeletonAnimation component to Test
This works as intended, just like our celestial circus scene (Getting Started/10-physics), which also makes use of the physics feature.
Are you sure you are using the latest spine-ue runtime from our 4.2 branch? Are you sure you also copied the latest spine-cpp runtime over to the plugin as described here:
https://en.esotericsoftware.com/spine-ue#Installation