ASP.NET Master Page frameworkName: Value cannot be null error -


I am going to some ASP.NET tutorials and I first see how a master page. When I create a master page, I get an error:

  The value can not be empty Parameter name: frameworkName  

This is my master page ( Masterpages.masters) and this is the default page that is created - I have not modified it at all:

  & lt;% @ master language = "C # "AutoEventWireup =" true "CodeFile =" MasterPage.master.cs "Inherit =" MasterPage "%> Can anyone tell me what is the  frameworkName  parameter and how can I get rid of this error? FYI: I'm using Visual Studio 2010. 

This VS There is a bug in 2010:

You are seeing this error, this is because xaml has montage references that you have failed to solve. There is a startpage.csproj in the same directory as the .xaml file. Please copy both to new folder and open the project file in VS2010. This should work

Here is the master file currently, so will I check the missing assemblies?:

& lt ;% @ Master language = "C #" AutoEventWireup = "true" CodeFile = "Site.master.cs" Inheritance = "site mister"%>

Can you recreate the solution Can and import into the new .sln file?


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