aspnet_compiler finding wrong version of System.Web.WebPages 1.0.0.0 instead of 2.0.0.0

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I solved this problem by explicitly referencing the 2.0 assembly in Web.config. I suppose that for some reason, the ASP.NET compiler (in my case when running MvcBuildViews), uses the old 1.0 assembly first, if it is found.

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <!-- … -->
  <system.web>
    <!-- … -->
    <compilation debug="true" targetFramework="4.0">
      <assemblies>
        <add assembly="System.Web.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL" />
        <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <add assembly="System.Web.WebPages, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL" />
      </assemblies>
    </compilation>
    <!-- … -->
  </system.web>
  <!-- … -->
</configuration>

BTW: It looked like this problem occurred for the first time after I added a 3rd party ASP.NET MVC 3.0 component. That component works fine through the assembly binding, but it may be the reason why the ASP.NET compiler tries to load the 1.0 web pages first.

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