Visual Studio 2015无法加载包,因为Microsoft。VisualStudio。壳15.0未能加载

当我在VS 2015上安装它时,我收到一条错误消息,说它无法加载我的软件包。在visual studio中 ActivityLog.xml

如何使VS 2015和2017都能运行扩展?

CreateInstance failed for package [MainWindowPackage]
Source: 'mscorlib' 
Description: Could not load file or assembly 'Microsoft.VisualStudio.Shell.15.0, Version=15.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified. 

System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.VisualStudio.Shell.15.0, Version=15.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified. 

File name: 'Microsoft.VisualStudio.Shell.15.0, Version=15.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' at System.Reflection.RuntimeAssembly.GetType(RuntimeAssembly assembly, String name, Boolean throwOnError, Boolean ignoreCase, ObjectHandleOnStack type) at System.Reflection.RuntimeAssembly.GetType(String name, Boolean throwOnError, Boolean ignoreCase) at System.Activator.CreateInstanceFromInternal(String assemblyFile, String typeName, Boolean ignoreCase, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes, Evidence securityInfo) at System.AppDomain.CreateInstanceFrom(String assemblyFile, String typeName)