I get the following error when I start my asp net mvc 4 application:
Could not load file or assembly \'DotNetOpenAuth.Core, Version=4.0.0.0, Culture=neutral
In case this helps anyone - I was unable to uninstall the DotNetOpenAuth components through Nuget, so I resolved this error by deleting them from the references list directly and then re-installing dotnetopenauth through nuget.