asp.net-mvc – F#Asp.Net CodeDom ProviderOptions问题

当我尝试从浏览器运行它时,我遇到了一个包含以下内容的YSOD：

[ArgumentNullException: Value cannot
be null. Parameter name: dictionary]
System.Collections.Generic.Dictionary2..ctor(IDictionary2
dictionary,IEqualityComparer`1
comparer) +12700827
System.Web.Compilation.CompilationUtil.CreateCodeDomProviderWithPropertyOptions(Type
codeDomProviderType) +84
System.Web.Compilation.CompilationUtil.CreateCodeDomProviderNonPublic(Type
codeDomProviderType) +16
System.Web.Compilation.AssemblyBuilder..ctor(CompilationSection
compConfig,ICollection
referencedAssemblies,CompilerType
compilerType,String
outputAssemblyName) +469
System.Web.Compilation.CompilerType.CreateAssemblyBuilder(CompilationSection
compConfig,String
generatedFilesDir,String
outputAssemblyName) +127
System.Web.Compilation.BuildProvidersCompiler.ProcessBuildProviders()
+675 System.Web.Compilation.BuildProvidersCompiler.PerformBuild()
+46 System.Web.Compilation.ApplicationBuildProvider.GetGlobalAsaxBuildResult(Boolean
isPrecompiledApp) +11321455
System.Web.Compilation.BuildManager.CompileGlobalAsax()
+50 System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled()
+872

我查看了使用Reflector的方法,看看它是否能给我更多的上下文,并发现它在第一行失败了

private static CodeDomProvider CreateCodeDomProviderWithPropertyOptions(Type codeDomProviderType)
{
IDictionary<string,string> providerOptions = new Dictionary<string,string>(GetProviderOptions(codeDomProviderType));
//Snip
}

这让我相信我在我的Web.config中为F#CodeDom指定的propertyOptions是不正确的.但是,如果我删除它们,我会收到同样的错误.

<system.codedom>
 <compilers>
  <compiler language="F#;f#;fs;fsharp" extension=".fs" warningLevel="4" 
            type="Microsoft.FSharp.Compiler.CodeDom.FSharpAspNetCodeProvider,FSharp.Compiler.CodeDom">
    <providerOption name="CompilerVersion" value="v4.0"/>
    <providerOption name="WarnAsError" value="false"/>
  </compiler>
 </compilers>
</system.codedom>

有关纠正此错误的任何想法？