I was considering to use path constraints in the next Unity project, so I decided to check out the Stretchyman example project.
When trying to import it into Unity though, I ran into the "Missing regions" error...
I've been using Spine and the latest Unity runtime (the same versions I'm still using now) without ever getting a problem with other animations that didn't include constraints... any Idea what could that be?
Using Spine 3.6.37 and Unity 5.6.2f1, just open the Stretchyman example problem, export and drag and drop into Unity to reproduce.