asp.net mvc 4 - Unable to install StructureMap.MVC4 on .NET 4, MVC 4, VS 2012 -

i trying install structuremap.mvc4 project, created in visual studio 2012, .net 4.0 , asp.mvc 4.

but getting below error:

could not install package 'microsoft.aspnet.webapi.client 5.1.2'. trying install package project targets '.netframework,version=v4.0', package not contain assembly references or content files compatible framework. more information, contact package author. @ line:1 char:16 + install-package <<<< structuremap.mvc4 webapi_structuremap_dotnet4 + categoryinfo : notspecified: (:) [install-package], invalidoperationexception + fullyqualifiederrorid : nugetcmdletunhandledexception,nuget.powershell.commands.installpackagecommand

any suggestions on missing please!

microsoft.aspnet.webapi.client 5.1.2 can installed project targets .net 4.5 or portable class library. not have assemblies .net 4.0.

the latest version of structuremap 3.0 depends on microsoft.aspnet.webapi.client 5.1.2 if want latest version of structuremap 3.0 need change project targets .net 4.5.

older versions of structuremap.mvc4 may work .net 4.0. version 2.6.4.3 example depends on older version of microsoft.aspnet.webapi supports .net 4.0. older versions of structuremap.mvc4, such 2.2.0 not depend on microsoft.aspnet.webapi.