unity导出模型在laya加载报错

Wheat

在unity2017.3.4中导出一个3D模型，放到laya2.0.1中加载报错。
测试改用了unity5.6.4，也是同样的错误。
用到转化工具版本为1.7.16 beta
Wheat

TypeError: Cannot read property 'props' of undefined
preload.js:55
at Function.Laya3D._getSprite3DHierarchyInnerUrls (file:///E:/svn/210/h5engine/trunk/laya/mytalkingtom_demo/bin/libs/laya.d3.js:17679:17)
 
at Loader.Laya3D._onHierarchylhLoaded (file:///E:/svn/210/h5engine/trunk/laya/mytalkingtom_demo/bin/libs/laya.d3.js:17775:10)
 
at EventHandler.__proto.runWith (file:///E:/svn/210/h5engine/trunk/laya/mytalkingtom_demo/bin/libs/laya.core.js:1410:41)
 
at Loader.__proto.event (file:///E:/svn/210/h5engine/trunk/laya/mytalkingtom_demo/bin/libs/laya.core.js:1166:28)
 
at Loader.__proto.complete (file:///E:/svn/210/h5engine/trunk/laya/mytalkingtom_demo/bin/libs/laya.core.js:16331:9)
 
at Loader.__proto.onLoaded (file:///E:/svn/210/h5engine/trunk/laya/mytalkingtom_demo/bin/libs/laya.core.js:16299:9)
 
at EventHandler.__proto.runWith (file:///E:/svn/210/h5engine/trunk/laya/mytalkingtom_demo/bin/libs/laya.core.js:1409:59)
 
at HttpRequest.__proto.event (file:///E:/svn/210/h5engine/trunk/laya/mytalkingtom_demo/bin/libs/laya.core.js:1166:28)
 
at HttpRequest.__proto.complete (file:///E:/svn/210/h5engine/trunk/laya/mytalkingtom_demo/bin/libs/laya.core.js:14031:16)
 
at HttpRequest.__proto._onLoad (file:///E:/svn/210/h5engine/trunk/laya/mytalkingtom_demo/bin/libs/laya.core.js:13995:9)
 
TypeError: Cannot read property 'props' of undefined
laya.d3.js:17679
at Function.Laya3D._getSprite3DHierarchyInnerUrls (file:///E:/svn/210/h5engine/trunk/laya/mytalkingtom_demo/bin/libs/laya.d3.js:17679:17)
 
at Loader.Laya3D._onHierarchylhLoaded (file:///E:/svn/210/h5engine/trunk/laya/mytalkingtom_demo/bin/libs/laya.d3.js:17775:10)
 
at EventHandler.__proto.runWith (file:///E:/svn/210/h5engine/trunk/laya/mytalkingtom_demo/bin/libs/laya.core.js:1410:41)
 
at Loader.__proto.event (file:///E:/svn/210/h5engine/trunk/laya/mytalkingtom_demo/bin/libs/laya.core.js:1166:28)
 
at Loader.__proto.complete (file:///E:/svn/210/h5engine/trunk/laya/mytalkingtom_demo/bin/libs/laya.core.js:16331:9)
 
at Loader.__proto.onLoaded (file:///E:/svn/210/h5engine/trunk/laya/mytalkingtom_demo/bin/libs/laya.core.js:16299:9)
 
at EventHandler.__proto.runWith (file:///E:/svn/210/h5engine/trunk/laya/mytalkingtom_demo/bin/libs/laya.core.js:1409:59)
 
at HttpRequest.__proto.event (file:///E:/svn/210/h5engine/trunk/laya/mytalkingtom_demo/bin/libs/laya.core.js:1166:28)
 
at HttpRequest.__proto.complete (file:///E:/svn/210/h5engine/trunk/laya/mytalkingtom_demo/bin/libs/laya.core.js:14031:16)
 
at HttpRequest.__proto._onLoad (file:///E:/svn/210/h5engine/trunk/laya/mytalkingtom_demo/bin/libs/laya.core.js:13995:9)