unity2017版本的项目用unity2018打开后,再用2017版本打开就会出现预制体无法拖入视图并且报错:
 
Unable to instantiate prefab. Prefab may be broken.
UnityEditorInternal.InternalEditorUtility:HierarchyWindowDrag(HierarchyProperty, Boolean, HierarchyDropMode)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
 
解决方案:用记事本打开对应的预制体并做出以下修改:
 
1.将“m_SourcePrefab”改为“m_ParentPrefab”
 
2.将“m_IsPrefabAsset”改为“m_IsPrefabParent”
 
保存就好了。