Today I got an error on my development farm after I updated SP 2013 to SP1 level. I also removed Visual Studio 2012 from the box and installed Visual Studio 2013.

In fact I did the SP1 update as last step.

Than I tried to run the “SharePoint 2013 Products Configuration Wizard” and got this error in the first update step (“Initializing…”):

One ore more typed failed to load.

I was pretty sure this error was caused by the Visual Studio “update”

Could not load file or assembly ‘Microsoft.Data.Edm, Version=5.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35’ or one of its dependencies.

Could not load file or assembly ‘Microsoft.Data.OData, Version=5.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35’ or one of its dependencies.

After some research I found this two components belong to “WCF Data Services 5.0 for OData V3”.

I downloaded the package from http://www.microsoft.com/en-us/download/details.aspx?id=29306 and installed it on my SharePoint dev box.

After that the “Products Configuration Wizard” worked as expected.