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  • Jan Bílek 15 posts 187 karma points
    Aug 19, 2015 @ 10:25
    Jan Bílek
    0

    Configuration Error after nuget installation

    Hi,

    I'm using VS2015 Community. I've created an empty ASP.NET project and installed Umbraco from NuGet package manager by following:

    Install-Package UmbracoCms

    During the installation I've selected to overwrite web.config files. Then I've successfully logged into Umbraco but made no changes. Now when I'm trying to load the default home page, I'm getting this configuration error.

    enter image description here

    What might went wrong or how to fix it?

    Thanks,

    John

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  • Lee Kelleher 4026 posts 15836 karma points MVP 13x admin c-trib
    Aug 20, 2015 @ 12:27
    Lee Kelleher
    100

    Hi John,

    The issue is with VS2015, it doesn't support MVC4, so you'll need to upgrade the project to MVC5.

    There are instructions on the Umbraco.com blog:
    https://umbraco.com/follow-us/blog-archive/2015/7/29/upgrading-your-umbraco-site-to-mvc5-and-webapi2

    The alternative is to use an earlier version of VS. (Pain in the bum, I know!)

    Cheers,
    - Lee

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  • Jan Bílek 15 posts 187 karma points
    Aug 21, 2015 @ 18:16
    Jan Bílek
    0

    Thanks Lee, It was a good point. I've upgraded the MVC as described in the link but sadly, it didn't helped. The configuration error is still there. Have you got any other ideas what might be causing this problem?

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  • Lee Kelleher 4026 posts 15836 karma points MVP 13x admin c-trib
    Aug 24, 2015 @ 09:11
    Lee Kelleher
    0

    Hi Jan,

    Oops, I didn't look very closely at the error message in your screengrab, it says:

    Section or group name 'system.web.webPages.razor' is already defined. This can not be defined multiple times.

    If you open your /Views/Web.config file, you should see that there is more than one <sectionGroup> with the name of "system.web.webPages.razor".

    Remove the duplicated one, (or others if there are more than one?)

    Cheers,
    - Lee

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  • Jan Bílek 15 posts 187 karma points
    Aug 27, 2015 @ 19:49
    Jan Bílek
    0

    OK,

    There were actually two sectionsGroups, and when I've deleted the second one everything worked fine. However, the real problem was that I left checked MVC checkbox when creating a new project. Problem solved.

    Thank You.

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