creator 1.8.1，美术做了一个spine，在编辑器上挂上去的时候报错，报错信息是
Error: Deform attachment not found: undefined
at SkeletonJson.readAnimation (D:\CocosCreator\resources\engine\extensions\spine\lib\spine.js:4457:15)
at SkeletonJson.readSkeletonData (D:\CocosCreator\resources\engine\extensions\spine\lib\spine.js:4157:11)
at sp_SkeletonData.cc.Class.getRuntimeData (D:\CocosCreator\resources\engine\extensions\spine\SkeletonData.js:217:42)
at sp_Skeleton._createSgNode (D:\CocosCreator\resources\engine\extensions\spine\Skeleton.js:427:46)
at sp_Skeleton._refresh (D:\CocosCreator\resources\engine\extensions\spine\Skeleton.js:1047:42)
at sp_Skeleton.notify (D:\CocosCreator\resources\engine\extensions\spine\Skeleton.js:144:22)
at sp_Skeleton.val.set (D:\CocosCreator\resources\engine\cocos2d\core\platform\preprocess-class.js:65:20)
at sp_Skeleton.r.set [as skeletonData] (D:\CocosCreator\resources\app.asar\editor\page\scene-utils\asset-watcher.js:1:766)
at D:\CocosCreator\resources\app.asar\editor\page\scene-utils\set-property-by-path.js:1:469
at CCLoader. (D:\CocosCreator\resources\engine\cocos2d\core\platform\CCAssetLibrary.js:110:17)
问了美术，他的spine里用了遮罩，是不是不支持？