Problems with MembershipUser / System.Web.ApplicationServices when upgrading to .net 4

Posted by DaveK on Stack Overflow See other posts from Stack Overflow or by DaveK
Published on 2010-06-05T15:34:50Z Indexed on 2010/06/05 15:42 UTC
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I have a large vb.net web project that I am trying to updgrade to .net4/VS2010. During compile I get the following error:

'System.Web.Security.MembershipUser' in assembly 'System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' has been forwarded to assembly 'System.Web.ApplicationServices'. Either a reference to 'System.Web.ApplicationServices' is missing from your project or the type 'System.Web.Security.MembershipUser' is missing from assembly 'System.Web.ApplicationServices'.

I researched the issue and the error is accurate. I added a reference to System.Web.ApplicationServices but I am still having problems. The project does not seem to recognize that the reference has been added. Intellisense will not pick it up, I can not use it in an Import statement, etc ...

The assembly is listed in the compile section of my web.config:

<assemblies>
...
    <add assembly="System.Web.ApplicationServices, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</assemblies>

Any ideas?

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