Web api help page error CS0012: Type "System.Collections.Generic.Dictionary'2错误

1、在asp.net Boilerplate项目中，Abp.0.12.0.2，.net framework4.5.2。下载后添加了webApi的helpPage功能，调试出现错误。

dubug : at AreasHelpPageViewsHelpDisplayTemplatesHelpPageApiModel.cshtml Samples error:
D: project MyWebMyWeb.WebAreasHelpPageViewsHelpDisplayTemplatesSamples.cshtml (6): error CS0012: Type "System.Collections.Generic.Dictionary'2 <T0,T1>" defined in the Assembly that is not referenced. You must add the assemblies "System.Collections, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" reference.

解决方法：在 Web.config, node <system.web> <assemblies>, adding
<add assembly="System.Collections, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />

解决：http://www.lyalin.com/2014/04/25/the-type-system-object-is-defined-in-an-assembly-that-is-not-reference-mvc-pcl-issue/ 

2、还是1的项目，debug时候正常，但发布到iis时候出现错误：

编译错误

说明: 在编译向该请求提供服务所需资源的过程中出现错误。请检查下列特定错误详细信息并适当地修改源代码。 

编译器错误消息: CS0012: 类型“System.Object”在未被引用的程序集中定义。必须添加对程序集“System.Runtime, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a”的引用。

解决方法：在web.config中，node <system.web> <assemblies>, adding

<add assembly="System.Runtime, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />

效果：

<system.web>
    <!--<trust level="Full" />-->
    <globalization culture="auto" uiCulture="auto"/>
    <compilation debug="true" targetFramework="4.5.2">
      <assemblies>
        <add assembly="System.Runtime, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
        <add assembly="System.Collections, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
      </assemblies>
    </compilation>
     
    <httpRuntime/>
    <customErrors mode="Off"/>
    <pages controlRenderingCompatibilityVersion="4.0"/>
  </system.web>