我从SVN检出的Unity工程，打开后工程里面的预制体里的Image和Button的图片都丢失了，预制体身上的脚本里面字段的赋值也没有了，但是我同事检出工程打开就没问题，什么原因？谢谢！
我一打开工程报了个错：
Microsoft (R) Visual C# Compiler version 2.9.1.65535 (9d34608e)
Copyright (C) Microsoft Corporation. All rights reserved.
error CS1704: An assembly with the same simple name 'SyntaxTree.VisualStudio.Unity.Bridge' has already been imported. Try removing one of the references (e.g. 'C:\Program Files (x86)\Microsoft Visual Studio Tools for Unity\15.0\Editor\SyntaxTree.VisualStudio.Unity.Bridge.dll') or sign them to enable side-by-side.
我关闭工程再打开就好了。
