安装VS2015更新1 RC之后，我再也无法加载C＃项目了。错误是：
CreateInstance failed for package [CSharpPackage]
Could not load file or assembly 'Microsoft.VisualStudio.LanguageServices.CSharp, Version=1.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
我尝试修复操作没有成功，我尝试了clearcache选项但没有成功。
知道如何手动删除/重新安装此软件包吗？