Unity 5.6.3p1
When exporting from Spine into Unity, Unity will freeze causing me to have to close and reopen Unity.
I went ahead and debugged this myself and here's the issue:
SkeletonDataAssetInspector.cs
c.Render() is being called when this.PreviewUtilityCamera.activeTexture and .targetTexture is null. This causes an infinite loop of exceptions within Unity and probably represents a bug for Unity... that said, here's the Spine solution:
add this to the beginning of the DoRenderPreview method:
if( this.PreviewUtilityCamera.activeTexture == null || this.PreviewUtilityCamera.targetTexture == null ) return;
