ccc2.0.0正式版 龙骨相关报错

Creator 2.x
#1

之前的项目1.9.3没事，
2.0下报错

TypeError: Cannot read property 'dispatchDBEvent' of undefined
cocos2d-js-for-preview.js:50021
    at DragonBones.281.DragonBones.advanceTime (http://localhost:7456/app/engine/bin/cocos2d-js-for-preview.js:50021:96)
    at dragonBones_CCFactory.update (http://localhost:7456/app/engine/bin/cocos2d-js-for-preview.js:49334:27)
    at 32.cc.Scheduler.update (http://localhost:7456/app/engine/bin/cocos2d-js-for-preview.js:9160:67)
    at 27.cc.Director.mainLoop (http://localhost:7456/app/engine/bin/cocos2d-js-for-preview.js:7063:29)
    at callback (http://localhost:7456/app/engine/bin/cocos2d-js-for-preview.js:7294:22)

报错中看到cc.Scheduler.update，与schedular有牵连，莫非是升级建议中写的enableTarget那个？但不知道怎么用啊。