TFS 2013 – Build：ASP.Net 4.5.1网站我收到此错误：

warning MSB3268: The primary reference "C:\Builds\2\MyProj\Web1_Main\bin\MyProj1.dll"
 could not be resolved because it has an indirect dependency on the framework assembly 
"System.Runtime,Version=4.0.10.0,Culture=neutral,PublicKeyToken=b03f5f7f11d50a3a" which
 could not be resolved in the currently targeted framework. ".NETFramework,Version=v4.5.1". To resolve this problem,either remove the reference 
"C:\Builds\2\MyProj\Web1_Main\bin\MyProj1.dll" or retarget your application to a framework 
version which contains "System.Runtime,PublicKeyToken=b03f5f7f11d50a3a".

@H_502_4@最初使用Unity 1.0.0.0的所有项目和站点都是4.0.我将其升级到4.5.2.此外,上述错误中的MyProj1引用了Unity,我也将其升级到3.5.1.

@H_502_4@阅读：https://unity.codeplex.com/workitem/12756
构建服务器已在变通方法中指向更新的4.5.2.

@H_502_4@所以我降级到4.5.1,但仍然得到了错误.

@H_502_4@>解决方案通过Visual Studio 2013在本地构建良好.
>独立的类库项目在TFS中很好地构建,但是当MyProj被添加为我的网站的引用时,那就是它失败的时候.

@H_502_4@有任何想法吗？

@H_502_4@升级时是否需要除TragetFramework settign之外的任何web.config更改？