FSharp.Core.sigdata not found alongside FSharp.Core

Posted by Mauricio Scheffer on Stack Overflow See other posts from Stack Overflow or by Mauricio Scheffer
Published on 2010-04-28T22:00:28Z Indexed on 2010/04/28 22:07 UTC
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I'm trying to use F# for an ASP.NET MVC application. One my controller actions sends an F# list to the view, so I write:

<%@ Page Language="C#" Inherits="ViewPage<FSharpList<int>>" %>

Of course, for this to work, I have to add Microsoft.FSharp.Collections to the namespaces element in my web.config:

<add namespace="Microsoft.FSharp.Collections"/>

and add a reference to FSharp.Core, in the assemblies element:

<add assembly="FSharp.Core, Version=, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>

As soon as I add this assembly reference, every view (whether it uses an F# type or not) fails with this error:

error FS1221: FSharp.Core.sigdata not found alongside FSharp.Core

I can work around this by not having any F# specific types in my views, but what's the reason for this error? Also, where's FSharp.Core.sigdata ? It's not in my GAC and I can't find it anywhere.

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