Problem with error messages in solution

Question

I have a solution with around 10 projects, I have not written any of this myself, but I'm going to take over a project here. The project that is the main project is based on WPF. When I try to run this project, I get the following compiler error:

The tag 'RoutingManagerView' does not exist in XML namespace 'clr-namespace:RoutingManager.Views;assembly=RoutingManager'. Line 29 Position 14. C:\Source\WSA\WsaClient\Views\MainView.xaml 29 14 WsaClient

Then, if I double click this error message, so that the xaml is opened, and the designer is loaded, the designer does not load, and I get 3 more error messages:

Unable to load the metadata for assembly 'WsaClient'. This assembly may have been downloaded from the web. See http://go.microsoft.com/fwlink/?LinkId=179545. The following error was encountered during load: Could not load file or assembly 'WsaClient' or one of its dependencies. The system cannot find the file specified. C:\Source\WSA\WsaClient\Views\MainView.xaml 1 1 WsaClient

Unable to load the metadata for assembly 'RoutingManager'. This assembly may have been downloaded from the web. See http://go.microsoft.com/fwlink/?LinkId=179545. The following error was encountered during load: Could not load file or assembly 'RoutingManager, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified. C:\Steria\Forsvaret\P6088\Source\WSA\WsaClient\Views\MainView.xaml 1 1 WsaClient

The type 'Views:RoutingManagerView' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built. C:\Source\WSA\WsaClient\Views\MainView.xaml 29 14 WsaClient

I googled it, and many have suggested that this is because a DLL is locked since it originates from the internet. However in my condition, I do not have a DLL. It's complaining on two projects that are a part of the solution, WsaManager and RoutingManager. I got all the source code on a zip file on an usb pen, and I have extracted it to somewhere on my c drive, so there is no remote access of the code.

If anyone have had the same or similar problem earlier, I would highly appreciate any pointers here on how to resolve this.

EDIT

The last error message is given on this line in the XAML file:

<Views:RoutingManagerView DataContext="{Binding Dependency}"/> 

And on the top of the XAML file, this is the import for the assembly:

xmlns:Views="clr-namespace:RoutingManager.Views;assembly=RoutingManager"

Answer 1

Resolve this by right clicking on the solution and choosing 'Rebuild Solution'

Answer 2

An additional point for other readers: if your projects builds successfully, but you get this error message while trying to load your view in the designer, make sure your assembly is x86 or Any CPU, because Visual Studio 2010 is a 32bit process and cannot load x64 assemblies in the designer.