Visual Studio :: EntityDesignerBuildProvider Error In System Web.config When Upgrading ?
Apr 13, 2010
My web site used ASP.NET 3.5 SP1, MVC 2, and EF. Last night I tried to upgrade to ASP.NET 4 (& EF4) under VS2010.
If my views are compiled (MvcBuildViews property is true), then the build fails with this error message:
Error 5 Could not load type 'System.Data.Entity.Design.AspNet.EntityDesignerBuildProvider'. C:WindowsMicrosoft.NETFrameworkv4.0.30319Configweb.config 129
It's actually complaining about my system web.config file.
If MvcBuildViews is false, then it will run (and compile the views normally just fine).
OS: Server 2008 R2, all updates applied at time of writing.
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Screenshots can be downloaded below.
[URL]
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