You can manually set the texture wrap on spAtlasPage to something != clamp to edge. I have to check, but I think clamp to edge works with non-POT in GL ES +2.0. Could be a bug in cocos2d-x.

edit: looks like your wrap is set to repeat or repeat mirror, which requires POT textures. The wrap of the spAtlasPages in your texture atlas should be set to clamp to edge. Please follow this issue for updates https://github.com/EsotericSoftware/spine-runtimes/issues/639

I have fixed the path constraint issue already. I've opened an issue here [c] SkeletonJson stuck in infinite loop · Issue #642 · EsotericSoftware/spine-runtimes · GitHub

Hm, I can't reproduce the infinite loop. Could you send me an export that breaks for you?

Right, the way attachments with vertices are stored has changed in 3.2, which explains the crashes. In general, the Spine editor version from which one exports and the Spine runtime must be on the same version. Going forward, we will be tagging the runtime repository with the respective versions.

Its crashing on exports of this file:
Dropbox link: https://www.dropbox.com/sh/den40n45hb44k7n/AABVGCggq93zorWpL2Jn2MtDa?dl=0

majzim: I've tried your sample with the latest spine-c and spine-sfml runtimes from GitHub, seems to work as intended. What editor and runtime versions are you using? http://sht.tl/q21oso

bilalmirza: can you provide me with a file that reproduces the error?

Yes, since that's the only animation on the skeleton. Full SFML code (just took what's in main.cpp:vine() and pointed it at the exports i made from Spine 3.4.01):

// Load atlas, skeleton, and animations.
   Atlas* atlas = Atlas_createFromFile("data/sentinel.atlas", 0);
   SkeletonJson* json = SkeletonJson_create(atlas);
   json->scale = 0.5f;
   SkeletonData *skeletonData = SkeletonJson_readSkeletonDataFile(json, "data/sentinel.json");
   if (!skeletonData) {
      printf("Error: %s\n", json->error);
      exit(0);
   }
   SkeletonJson_dispose(json);

   SkeletonDrawable* drawable = new SkeletonDrawable(skeletonData);
   drawable->timeScale = 1;

   Skeleton* skeleton = drawable->skeleton;
   skeleton->x = 320;
   skeleton->y = 590;
   Skeleton_updateWorldTransform(skeleton);

   AnimationState_setAnimationByName(drawable->state, 0, "idle", true);

   sf::RenderWindow window(sf::VideoMode(640, 640), "Spine SFML - vine");
   window.setFramerateLimit(60);
   sf::Event event;
   sf::Clock deltaClock;
   while (window.isOpen()) {
      while (window.pollEvent(event))
         if (event.type == sf::Event::Closed) window.close();

  float delta = deltaClock.getElapsedTime().asSeconds();
  deltaClock.restart();

  drawable->update(delta);

  window.clear();
  window.draw(*drawable);
  window.display();
   }

   SkeletonData_dispose(skeletonData);
   Atlas_dispose(atlas);

There must be something wrong in your setup of the desktop project. Cocos2d-X ships their own, super outdated, broken, Spine runtime (which we tried to make them not do for a long time). My guess is that your desktop project links to that instead of our Spine runtime. Could you send me your test project so I can check?

If you've updated to the latest official runtime, then paths will not crash. Please provide a sample that reproduces the issue.

@bilamirza I don't see a reproduction sample in this thread. Please post a project so I can check if you are actually using the latest official Spine runtime.